Add missing #include and forward decl, found by modules build.

llvm-svn: 237195

llvm/include/llvm/CodeGen/WinEHFuncInfo.h

@@ -22,7 +22,7 @@ namespace llvm {
 class BasicBlock;
 class Constant;
 class Function;
-class GlobalValue;
+class GlobalVariable;
 class IntrinsicInst;
 class LandingPadInst;
 class MCSymbol;

llvm/include/llvm/Target/TargetCallingConv.h

@@ -18,6 +18,7 @@
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Support/MathExtras.h"
 #include <string>
+#include <limits.h>
 
 namespace llvm {