merge revision(s) r48174: [Backport #10438]
* configure.in: remove apple-gcc4.2 from CC candidates.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@48177 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r48174: [Backport #10438]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@48177 b2dd03c8-39d4-4d8f-98ff-823fe69b080e