* gc.c (gc_sweep): makes new room if object space is full of
	  finalized objects and has no free objects.  [ruby-dev:39201]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@25801 b2dd03c8-39d4-4d8f-98ff-823fe69b080e