merge revision(s) 53455: [Backport #11962]
* ruby.h: undef HAVE_BUILTIN___BUILTIN_CHOOSE_EXPR_CONSTANT_P and HAVE_BUILTIN___BUILTIN_TYPES_COMPATIBLE_P on C++. [ruby-core:72736] [Bug #11962]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54364 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 53455: [Backport #11962]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54364 b2dd03c8-39d4-4d8f-98ff-823fe69b080e