bootstrap-driver: add NOCOMPILER flags for cmsBuild

The current bootstrap-driver still brings in GCC, the biggest
depenendency. The patch removes it, by adding NOCOMPILER flag.

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
Merge pull request #237 from davidlt/bootstrap-driver-nocompiler

bootstrap-driver: add NOCOMPILER flags for cmsBuild