[PATCH] [ASan] Allow the users of SymbolizationLoop to make use of the -dsym_hint option in llvm-symbolizer

[Alexander Potapenko]

https://codereview.chromium.org/728233003/diff/1/tools/valgrind/asan/asan_symbolize.py contains an example of using this new functionality.

http://reviews.llvm.org/D6310