diff --git a/Makefile.am b/Makefile.am
index b10d0850664..f3dc016b933 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,3 +1,7 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 ACLOCAL_AMFLAGS = -I build-aux/m4
 SUBDIRS = src
 .PHONY: deploy FORCE
diff --git a/autogen.sh b/autogen.sh
index 46e36ff5b21..27417daf769 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,8 @@
 #!/bin/sh
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 set -e
 srcdir="$(dirname $0)"
 cd "$srcdir"
diff --git a/build-aux/m4/bitcoin_find_bdb48.m4 b/build-aux/m4/bitcoin_find_bdb48.m4
index 2aa493a6af6..0c3d49c2bc0 100644
--- a/build-aux/m4/bitcoin_find_bdb48.m4
+++ b/build-aux/m4/bitcoin_find_bdb48.m4
@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2015 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 AC_DEFUN([BITCOIN_FIND_BDB48],[
   AC_MSG_CHECKING([for Berkeley DB C++ headers])
   BDB_CPPFLAGS=
diff --git a/build-aux/m4/bitcoin_qt.m4 b/build-aux/m4/bitcoin_qt.m4
index d26136cbe9a..509283a0b9c 100644
--- a/build-aux/m4/bitcoin_qt.m4
+++ b/build-aux/m4/bitcoin_qt.m4
@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2016 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 dnl Helper for cases where a qt dependency is not met.
 dnl Output: If qt version is auto, set bitcoin_enable_qt to false. Else, exit.
 AC_DEFUN([BITCOIN_QT_FAIL],[
diff --git a/build-aux/m4/bitcoin_subdir_to_include.m4 b/build-aux/m4/bitcoin_subdir_to_include.m4
index 66f106c7d47..7841042ac87 100644
--- a/build-aux/m4/bitcoin_subdir_to_include.m4
+++ b/build-aux/m4/bitcoin_subdir_to_include.m4
@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2014 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 dnl BITCOIN_SUBDIR_TO_INCLUDE([CPPFLAGS-VARIABLE-NAME],[SUBDIRECTORY-NAME],[HEADER-FILE])
 dnl SUBDIRECTORY-NAME must end with a path separator
 AC_DEFUN([BITCOIN_SUBDIR_TO_INCLUDE],[
diff --git a/build-aux/m4/l_atomic.m4 b/build-aux/m4/l_atomic.m4
index 906724b6405..75c43f9a92d 100644
--- a/build-aux/m4/l_atomic.m4
+++ b/build-aux/m4/l_atomic.m4
@@ -1,3 +1,9 @@
+dnl Copyright (c) 2015 Tim Kosse <tim.kosse@filezilla-project.org>
+dnl Copying and distribution of this file, with or without modification, are
+dnl permitted in any medium without royalty provided the copyright notice
+dnl and this notice are preserved. This file is offered as-is, without any
+dnl warranty.
+
 # Some versions of gcc/libstdc++ require linking with -latomic if
 # using the C++ atomic library.
 #
@@ -32,7 +38,7 @@ AC_DEFUN([CHECK_ATOMIC], [
           AC_MSG_RESULT([yes])
         ],[
           AC_MSG_RESULT([no])
-          AC_MSG_FAILURE([cannot figure our how to use std::atomic])
+          AC_MSG_FAILURE([cannot figure out how to use std::atomic])
         ])
     ])
 
diff --git a/share/genbuild.sh b/share/genbuild.sh
index 1ef77d706f7..eecac4bd00b 100755
--- a/share/genbuild.sh
+++ b/share/genbuild.sh
@@ -1,4 +1,8 @@
 #!/bin/sh
+# Copyright (c) 2012-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 if [ $# -gt 1 ]; then
     cd "$2"
 fi
diff --git a/src/Makefile.am b/src/Makefile.am
index e3eaacdb4c9..1e033de9daf 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,3 +1,7 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 DIST_SUBDIRS = secp256k1 univalue
 
 AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS)
diff --git a/src/Makefile.bench.include b/src/Makefile.bench.include
index 4067ceb3993..8c024a8c4ad 100644
--- a/src/Makefile.bench.include
+++ b/src/Makefile.bench.include
@@ -1,3 +1,7 @@
+# Copyright (c) 2015-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 bin_PROGRAMS += bench/bench_bitcoin
 BENCH_SRCDIR = bench
 BENCH_BINARY = bench/bench_bitcoin$(EXEEXT)
diff --git a/src/Makefile.leveldb.include b/src/Makefile.leveldb.include
index 4b3cd6364a2..d7346aa181d 100644
--- a/src/Makefile.leveldb.include
+++ b/src/Makefile.leveldb.include
@@ -1,3 +1,7 @@
+# Copyright (c) 2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 LIBLEVELDB_INT = leveldb/libleveldb.a
 LIBMEMENV_INT  = leveldb/libmemenv.a
 
diff --git a/src/Makefile.qt.include b/src/Makefile.qt.include
index bbef6417688..8e6805d4aaf 100644
--- a/src/Makefile.qt.include
+++ b/src/Makefile.qt.include
@@ -1,3 +1,7 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 bin_PROGRAMS += qt/bitcoin-qt
 EXTRA_LIBRARIES += qt/libbitcoinqt.a
 
diff --git a/src/Makefile.qttest.include b/src/Makefile.qttest.include
index 813a343ffa3..a071fe1362f 100644
--- a/src/Makefile.qttest.include
+++ b/src/Makefile.qttest.include
@@ -1,3 +1,7 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 bin_PROGRAMS += qt/test/test_bitcoin-qt
 TESTS += qt/test/test_bitcoin-qt
 
diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index 27e7694748c..ef30eeb4ae2 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -1,3 +1,7 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 TESTS += test/test_bitcoin
 bin_PROGRAMS += test/test_bitcoin
 TEST_SRCDIR = test
diff --git a/src/coins.cpp b/src/coins.cpp
index 39db7dedfbb..8ff652b474b 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -275,7 +275,7 @@ double CCoinsViewCache::GetPriority(const CTransaction &tx, int nHeight, CAmount
         assert(coins);
         if (!coins->IsAvailable(txin.prevout.n)) continue;
         if (coins->nHeight <= nHeight) {
-            dResult += coins->vout[txin.prevout.n].nValue * (nHeight-coins->nHeight);
+            dResult += (double)(coins->vout[txin.prevout.n].nValue) * (nHeight-coins->nHeight);
             inChainInputValue += coins->vout[txin.prevout.n].nValue;
         }
     }
diff --git a/src/main.cpp b/src/main.cpp
index 61d0aaf0b9b..84f4607dba1 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5388,6 +5388,8 @@ bool static ProcessMessage(CNode* pfrom, string strCommand, CDataStream& vRecv,
         BlockTransactionsRequest req;
         vRecv >> req;
 
+        LOCK(cs_main);
+
         BlockMap::iterator it = mapBlockIndex.find(req.blockhash);
         if (it == mapBlockIndex.end() || !(it->second->nStatus & BLOCK_HAVE_DATA)) {
             LogPrintf("Peer %d sent us a getblocktxn for a block we don't have", pfrom->id);
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 3270cd384f4..b2bbb8b3edc 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -535,7 +535,7 @@ UniValue decodescript(const UniValue& params, bool fHelp)
             "     \"address\"     (string) bitcoin address\n"
             "     ,...\n"
             "  ],\n"
-            "  \"p2sh\",\"address\" (string) script address\n"
+            "  \"p2sh\",\"address\" (string) address of P2SH script wrapping this redeem script (not returned if the script is already a P2SH).\n"
             "}\n"
             "\nExamples:\n"
             + HelpExampleCli("decodescript", "\"hexstring\"")
@@ -554,7 +554,15 @@ UniValue decodescript(const UniValue& params, bool fHelp)
     }
     ScriptPubKeyToJSON(script, r, false);
 
-    r.push_back(Pair("p2sh", CBitcoinAddress(CScriptID(script)).ToString()));
+    UniValue type;
+    type = find_value(r, "type");
+
+    if (type.isStr() && type.get_str() != "scripthash") {
+        // P2SH cannot be wrapped in a P2SH. If this script is already a P2SH,
+        // don't return the address for a P2SH of the P2SH.
+        r.push_back(Pair("p2sh", CBitcoinAddress(CScriptID(script)).ToString()));
+    }
+
     return r;
 }