Unbreak LLVM on the MSVC compiler:

-Bring in int64_t for TableGen/Record.h and TableGen/TGLexer.h
-Define strtoull

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57970 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGLexer.h b/utils/TableGen/TGLexer.h
index 2c5a852..0e67f68 100644
--- a/utils/TableGen/TGLexer.h
+++ b/utils/TableGen/TGLexer.h
@@ -14,6 +14,7 @@
 #ifndef TGLEXER_H
 #define TGLEXER_H
 
+#include "llvm/Support/DataTypes.h"
 #include <vector>
 #include <string>
 #include <iosfwd>