[PATCH] Add new 'let' command to bind arbitrary values into constants.

[Peter Collingbourne]

================
Comment at: unittests/clang-query/QueryEngineTest.cpp:139
@@ +138,3 @@
+
+  EXPECT_FALSE(QueryParser::parse("unlet x bad_data", S)->run(OS, S));
+  EXPECT_EQ("unexpected extra input: ' bad_data'\n", OS.str());
----------------
Can you please move this test to QueryParserTest?

http://reviews.llvm.org/D3383

REPLY HANDLER ACTIONS
  Reply to comment, or !reject, !abandon, !reclaim, !resign, !rethink, !unsubscribe.