ICE-9348 ACE Renderers have thread unsafe instance field

git-svn-id: http://anonsvn.icesoft.org/repo/icefaces3/trunk/icefaces@36217 1de00972-ac04-4911-a46b-06793c8d78d9
ICE-9348: ACE Renderers have thread unsafe instance field.

git-svn-id: http://anonsvn.icesoft.org/repo/icefaces3/trunk/icefaces@36218 1de00972-ac04-4911-a46b-06793c8d78d9