Fixed interpretation of (Right False) in rsa/dsa verification.
Added test cases for verifying corrupted data.
erge branch 'pull5'

* pull5:
  Added test cases for verifying corrupted data.
  Fixed interpretation of (Right False) in rsa/dsa verification.
Merge remote-tracking branch 'stephen/master'

Conflicts:
	Data/OpenPGP/CryptoAPI.hs
	tests/suite.hs