merge revision(s) r45537: [Backport #9710]
* configure.in: get rid of __builtin_setjmp/__builtin_longjmp on x64-mingw, which causes SEGV with callcc. [ruby-core:61887] [Bug #9710]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) r45537: [Backport #9710]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@47278 b2dd03c8-39d4-4d8f-98ff-823fe69b080e