[in dev] multiplexing domains for pmc measures

sched_credit.c : added initialization functions for results table
		implemented start and stop functions
		seems like there is a problem when doing the (rd and wr)msr in update_dom, maybe not the good register, the results are incoherent
		proper code.

kernel.c       : remove "fake" read(/write/init)_demux() functions to be able to use the real ones.