Rollback 6254:6256, IE plugin fixes that should have
been committed to trunk. Scottb will re-commit them there.

Reviewed by: scottb


git-svn-id: https://google-web-toolkit.googlecode.com/svn/branches/farewellSwt@6260 8db76d5a-ed1c-0410-87a9-c151d255dfc7