Bug 434855 - AbstractCalendarItemProvider threading issue - https://bugs.eclipse.org/bugs/show_bug.cgi?id=434855

Patch by Adrian Sacchi
bug 434396: Swing: Detection of HTML links in table does not work always

https://bugs.eclipse.org/bugs/show_bug.cgi?id=434396
Consider an indent if it is set. Backport of commit
738fa7581a482d93cb3f78c6fffd2a13461dc7b4