Remove Factory::CopyMap(map) in favor of Map::Copy(map)

BUG=
R=ulan@chromium.org

Review URL: https://codereview.chromium.org/219963009

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20411 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Remove V8_INLINE to prevent C4714 warning under Win64.

BUG=
R=jochen@chromium.org

Review URL: https://codereview.chromium.org/217123004

Patch from Daniel Vogelheim <vogelheim@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20412 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Merge remote-tracking branch 'upstream/master'