Use CCACHE for faster compiling

Change-Id: Ibdb033f60164291ea132f55d60e73c8247ab5313
Tweak some compiling values

Change-Id: I25805490bb14198b22b1aa047475dd0649a84417
Remove VideoEditor in rom

Change-Id: I41b6509668d4e45d0c8b4d94f3f16a90245a3893
Don't compile Updater, Calculator and ICS Gallery

Change-Id: Ib4223ea680629c0fc40e152486037d3a71a19765
Remove some languages in rom

Enabled only :

- English
- French
- Spanish
- Italian

Change-Id: I90b768035c3201aa225ac7fcebf11ac9c20df40c