Replace the -unwind-tables option with a per function flag. This is more

LTO friendly as we can now correctly merge files compiled with or without
-fasynchronous-unwind-tables.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132033 91177308-0d34-0410-b5e6-96231b3b80d8

lib/AsmParser/LLToken.h

@@ -87,6 +87,7 @@ namespace lltok {
     kw_nest,
     kw_readnone,
     kw_readonly,
+    kw_uwtable,
 
     kw_inlinehint,
     kw_noinline,