xorg-server: isable acpi/apm

.. as we dont have acpid / apmd.
remove XBMC_RSXS

... because sceensavers do not really matter
glew: dont depend on libXmu
remove package: libXmu
remove package: libXt
remove package: libSM
remove package: libICE
remove package: libXtst
glew: dont build depend on libXi

... not used
remove package: libXi