[PATCH] [compiler-rt] ASan debugging API for report info extraction and locating addresses

[Kuba Brecka]

Reverted in r218501 due to test failure on the sanitizer-x86_64-linux buildbot. Committed again in r218538 with a fix, intptr_t -> uintptr_t, and an extra free(heap_ptr) to fix the LeakSanitizer report. Both changes are in the test file only (debug_locate.cc).

http://reviews.llvm.org/D4527