[PATCH] [lsan] Convert the remaining LSan tests to output tests.

[Kostya Serebryany]

  LGTM (with a nit)


================
Comment at: lib/lsan/lit_tests/use_stacks.cc:14
@@ +13,3 @@
+  fprintf(stderr, "Test alloc: %p.\n", stack_var);
+  exit(0);
+}
----------------
no need for exit(0)


http://llvm-reviews.chandlerc.com/D870