configure.in: LIBPATH on AIX
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
configure.in: LIBPATH on AIX
SHLIB_PATH which was carelessly copied from HP/UX. suggested by
Perry Smith at [ruby-core:46397]. [Bug #6728]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36499 b2dd03c8-39d4-4d8f-98ff-823fe69b080e