merge revision(s) 33577:
* configure.in: check -fno-omit-frame-pointer acceptance and usage under MinGW. [ruby-core:39957] [Bug #5407]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34189 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 33577:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34189 b2dd03c8-39d4-4d8f-98ff-823fe69b080e