[PATCH] [lsan] Implement __lsan_suppress_object().

[Kostya Serebryany]

  LGTM with a nit


================
Comment at: lib/lsan/lit_tests/TestCases/ignore_object.cc:19
@@ +18,3 @@
+  void **p = new void *;
+  *reinterpret_cast<void **>(p) = malloc(666);
+  volatile void *q = malloc(1337);
----------------
p is already void**


http://llvm-reviews.chandlerc.com/D910

BRANCH
  feat/lsan/suppress_object

ARCANIST PROJECT
  compiler-rt