Ruby

• pack.c (pack_unpack): when unpack('M') occurs an illegal byte
  sequence, output the "=" character and the following character in
  the decoded data without any transformation.
  [ruby-dev:44875] [Bug #5635]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34972 b2dd03c8-39d4-4d8f-98ff-823fe69b080e