merge revision(s) 33327:
* configure.in: ignore all warnings from an arbitrary header in /usr/local/include.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34690 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 33327:
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@34690 b2dd03c8-39d4-4d8f-98ff-823fe69b080e