Two RTS profiler cleanups
Commit messages:
rts: Divorce init of Heap profiler from CCS profiler
Currently initProfiling gets defined by Profiling.c only if PROFILING is
defined. Otherwise the ProfHeap.c defines it.
This is just needlessly complicated so in this commit I make Profiling and
ProfHeap into properly seperate modules and call their respective init
functions from RtsStartup.c.
rts: Rename the nondescript initProfiling2 to refreshProfilingCCSs