merge revision(s) r44619:

	test_gc.rb: relax assertion

	* test/ruby/test_gc.rb (test_profiler_total_time): GC time may be
  shorter than the timer resolution.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_1@45866 b2dd03c8-39d4-4d8f-98ff-823fe69b080e