[PATCH] [compiler-rt] Add a HasSuppressionType method into SuppressionContext

[Alexey Samsonov]

LGTM

================
Comment at: lib/sanitizer_common/tests/sanitizer_suppressions_test.cc:160
@@ +159,3 @@
+    "thread:bar\n"
+  );  // NOLINT
+  EXPECT_TRUE(ctx_->HasSuppressionType(SuppressionRace));
----------------
Can you fix the lint warning instead?

http://reviews.llvm.org/D6443