* pack.c (EXTEND32): unpack("l") did not work where sizeof(long) != 4.
  [ruby-talk:180024]

* pack.c (pack_unpack): fixed integer overflow on template "w".
  [ruby-talk:180126]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@9947 b2dd03c8-39d4-4d8f-98ff-823fe69b080e