merge revision(s) 33978:
* configure.in (RUBY_WERROR_FLAG): append all warning flags which are enabled to compile, so that printf format modifiers properly fail. [ruby-core:41351] [Bug #5679]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@35603 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 33978:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@35603 b2dd03c8-39d4-4d8f-98ff-823fe69b080e