Andrew Chow 37a79a4fcc Move various SigningProviders to signingprovider.{cpp,h}
Moves all of the various SigningProviders out of sign.{cpp,h} and
keystore.{cpp,h}. As such, keystore.{cpp,h} is also removed.

Includes and the Makefile are updated to reflect this. Includes were largely
changed using:
git grep -l "keystore.h" | xargs sed -i -e 's;keystore.h;script/signingprovider.h;g'
2019-07-09 16:20:18 -04:00
..
2015-10-06 17:46:12 +02:00
2018-07-27 07:15:02 -04:00
2019-03-26 18:12:31 +01:00
2019-05-23 14:12:32 -04:00