Merge farewellSwt into trunk.

svn merge https://google-web-toolkit.googlecode.com/svn/trunk@6270 \
  https://google-web-toolkit.googlecode.com/svn/branches/farewellSwt@6365  .


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@6366 8db76d5a-ed1c-0410-87a9-c151d255dfc7