[PATCH] Tests and interface for LeakSanitizer.

[Kostya Serebryany]

  LGTM with a style nit


================
Comment at: lib/lsan/tests/lsan_test.cc:215
@@ +214,3 @@
+  // Take p's address to ensure it's not optimized into a register.
+  void * volatile *pp = &p;
+  arg->hidden_p = HIDE(*pp);
----------------
our code uses 'void *foo', not "void * foo" and not "void* foo". Check other places.
Don't forget about lint too. 


http://llvm-reviews.chandlerc.com/D677

BRANCH
  lsan_interface_and_tests

ARCANIST PROJECT
  compiler-rt