[llvm-commits] [PATCH] Unit tests for StringMap

[Talin]

Here's StringMapTest, and some minor cleanup of DenseMapTest. Oh, and I
found a bug in StringMap during the process of writing the tests, the fix is
also included.
Some notes:

   - I could not get StringMapEntryInitializer to compile, so those tests
   are disabled. Even more puzzling is that I could not find any code that uses
   StringMapEntryInitializer (I was hoping to find an example as to how to do
   the explicit specialization.)
   - I was very surprised that the default implementation of
   StringMapEntryInitializer is empty (no action) instead of a generic
   assignment - it means that insert() basically doesn't work, as the value
   never gets copied to the StringMapEntry.

-- 
-- Talin
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