[gtk2] fix old config file...
[changelog] update
[misc, gtk2] clean up, start using strbuff in gtk2
[qt4/kwin] use appmenu only in 4.10
[qt4/kwin] clean up
[qt] format
[cmake] wrap compile related commands with if(ENABLE_*) in order not to confuse cmake with empty include etc.
[tools] add missing includes