ART: Add pic flag to oat header store

Add the compile-time PIC flag to the oat-header key-value store.
Ignore image offset and patch delta when loading PIC oat files.

(cherry-picked from AOSP master
7ba649636c4475c3992fa15a57acd2546d69ff38)

Bug: 18035729
Signed-off-by: Igor Murashkin <iam@google.com>
Change-Id: Ie1f1ef37125386a968228033d1e2bec565315510
6 files changed