Fix for Bug 436121 - [Trim] Luna RC1 crashes after splitting editor area

Change-Id: Ia84dcd466b5f9ca30da50026c29c7553115dfb57
Bug 436106 - [CSS] Color of the bar below view toolbar changes after
switching perspective

Change-Id: Ie266daa84035b40e1525e1a425dabdb1ce42fe6c
Signed-off-by: Daniel Rolka <daniel.rolka@pl.ibm.com>
Bug 436358 - Regressions from bug 432826: slow setTaskName on ProgressbarDialog on Linux and even worse on OSX

Ensure setTaskname() is synchronized

Change-Id: Iaa8df6e4b4dd9af222f8fd52c161a42517576fbe
Fixed bug 436606: org.eclipse.ui.themes.source is missing about.html