NEO will be querying FCL for preferrerd IR
(intermediate representation) instead of
using llvm bc.
Change-Id: I98316b5623557a9651da2a4c5e610ab26421c491
call to FCL can be costly. we don't need this when kernel source is
simple and does not contain '#include'. In this case we can compute hash
directly based on kernel source.
Change-Id: I0455be57d9ee13919a53c145e3feeb00a113d71e