Increased the non-power-of-2 icon texture resolution from 96x96 to 256x256 pixels,
in the case of the ring switcher from 64 to 256

Compiztoolbox:

Increased the non-power-of-2 icon texture resolution const unsigned short ICON_SIZE
from 48 to 256 and const unsigned short MAX_ICON_SIZE from 256 to 512

First cleanup, before starting the GLES port
(please see main commit message for details)

Problem: Editors like gedit and others will not recognize *.xml.in files as xml, so if opened there is no syntax highlighting making those files harder to read.
This commit fixes this by adding <?xml version="1.0" encoding="UTF-8"?> to all *.xml.in files in lp:compiz