[PATCH] Add support for CUDA unroll pragma

[hfinkel at anl.gov]

================
Comment at: lib/Parse/ParsePragma.cpp:675
@@ +674,3 @@
+    // FIXME: We should allow non-type template parameters for the loop hint
+    // value. See bug report #19610
+    if (Info->Value.is(tok::numeric_constant))
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If this gets committed, please also add a corresponding note in the bug report that there is another  instance of the issue to fix :)

http://reviews.llvm.org/D4297