[test suite] minor permission modification update to use %cf hash
[client] man page update to include GPG_SIGNING_PW synonym for KEY variable in GPG mode
[libfko] defensive coding update to quiet minor CLANG static analyzer false positives
[test suite] added tests for KEY synonym GPG_SIGNING_PW
remove newline chars from log_msg() calls
added fwknoprc gpg signing pw test conf files to Makefile.am