[PATCH] D7203: [asan] Set abort_on_error=1 by default on OS X

[Kostya Serebryany]

kcc added a comment.

But the existing state encourage more changes to ASAN_OPTIONS in lit.cfg. 
We at the very least should warn in the comments about adding more options there, 
but better remove this too.


http://reviews.llvm.org/D7203