Fix thet tests.

I seem to have missed the update I made for changing 'flag_pic' to "PIC Level".
Mea culpa.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221792 91177308-0d34-0410-b5e6-96231b3b80d8
Revert part of the PIC tests (TLS part)

This change actually wasn't warranted for -O0, and the new changes prove it and
break the build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221793 91177308-0d34-0410-b5e6-96231b3b80d8
Return the number of read bytes in MemoryObject::readBytes.

Returning more information will allow BitstreamReader to be simplified a bit
and changed to read 64 bits at a time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221794 91177308-0d34-0410-b5e6-96231b3b80d8