FWCore: add support for Address Sanitizer IBs

The following adds support for Address Sanitizer (asan) IBs using
mainstream branch. Because a full stack of CMSSW is not compiled with
ASan we need some extra steps. ASan run-time must be linked into
main executables statically to force early ASan initialization.

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Automatically ported from CMSSW_7_2_X #5329