[PATCH] [tablegen] Add !listconcat operator with the similar semantics as !strconcat

[Daniel Sanders]

Thanks!

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Comment at: docs/TableGen/LangIntro.rst:170
@@ -163,3 +169,3 @@
 ``!strconcat(a, b)``
     A string value that is the result of concatenating the 'a' and 'b' strings.
 
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hfinkel at anl.gov wrote:
> While you're here, can you also add a comment about what strconcat does with multiple arguments (a separate commit is fine).
Already done in r207865.

http://reviews.llvm.org/D3506