merge revision(s) 36593: [Backport #7407]
* gc.c: return true or false. Patch by Dirkjan Bussink. [Bug #6821] * test/ruby/test_gc.rb: add test-case for this bug.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@38469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 36593: [Backport #7407]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@38469 b2dd03c8-39d4-4d8f-98ff-823fe69b080e