* Makefile.in (miniruby): 1.9.3 doesn't have POSTLINK macro.
  reported by Takahiro Kambe at [ruby-list:49362].


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@40754 b2dd03c8-39d4-4d8f-98ff-823fe69b080e