Use isValidSigned from Libmacgpg.
Add 32bit support back.
Merge branch 'dev' of https://github.com/GPGTools/GPGPreferences into dev

Conflicts:
	Source/GPGToolsPref.m
Synthesizing is still required for 32bit.
Remove old prefPanes.
Add release notes.
[#56 state:fixed] Comment field not saved after editing
1.0.2 release notes
Release of version: 1.0.2
Merge branch 'dev'