* gc.c (rgengc_rememberset_mark): change scan algorithm for performance:
	  from object's pointer base to bitmap one.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41095 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* remove trailing spaces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41096 b2dd03c8-39d4-4d8f-98ff-823fe69b080e