Remove opencv dependency (qt3)

See merge request !2

(thanks to P. Legrand and M. Savko from SOLEIL)

but opencv code has been commented for the moment, since
it doesn't work on Debian 6

in sip file for QtXEmbedClient and QtXEmbedController

added qttools compilation in setup.py

thanks to Martin Savko (SOLEIL)

due to an older version of sipdistutils), has been fixed thanks to
Michael Hellmig (BESSY-MX)

moved code into a Qub subdirectory to make it easier with setup.py

*test function in .py

Conflicts:
	CTools/pixmaptools/pixmaptools_lut.cpp

class