Overview of Changes in 2.6.8 (since 2.6.7)
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* Fixed bugs:
	Bug 333398 - Menubars in panel applets have sunken mode (Clearlooks)
	Bug 317639 - GtkHScale not rendered properly in Clearlooks
	Bug 148848 - No visual difference of disabled checkboxes in SimplySmooth (Smooth)

* Lots of other miscellaneous fixes
* Prevent unnecessary symbols from being exported (all engines)
* Prefix symbols in engines, to prevent possible conflicts with applications
* Improved RTL support in Clearlooks