Split JIT image from oBCC.

This change is the first step to merge CacheReader and
MCCacheReader (CacheWriter and MCCacheWriter.)  In this
commit, we split the executable generated by OLD JIT
into a separated file with ".jit-image" as the file extension.

Change-Id: Icd40623e1247ffdfa93558b8e9fc4378a78b4ea1
6 files changed