Log Message:
Update to 0.52:

0.52 - 2016-02-16
 - Skip "grp" records, generated by GPG 2.1; this suppresses "unknown
   record type" warnings
 - Add explicit Fatal dependency; though nominally part of code perl,
   RedHat's perl does not ship with it
 - Ensure that the trustdb is created before attempting to encrypt; gpg2
   requires that it exist, even for commands with --trust-model=always.
   See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751266