land David Blaikie's patch to de-constify Type, with a few tweaks.

llvm-svn: 135375
diff --git a/llvm/unittests/VMCore/VerifierTest.cpp b/llvm/unittests/VMCore/VerifierTest.cpp
index 1924661..324b4e1 100644
--- a/llvm/unittests/VMCore/VerifierTest.cpp
+++ b/llvm/unittests/VMCore/VerifierTest.cpp
@@ -47,7 +47,7 @@
 TEST(VerifierTest, AliasUnnamedAddr) {
   LLVMContext &C = getGlobalContext();
   Module M("M", C);
-  const Type *Ty = Type::getInt8Ty(C);
+  Type *Ty = Type::getInt8Ty(C);
   Constant *Init = Constant::getNullValue(Ty);
   GlobalVariable *Aliasee = new GlobalVariable(M, Ty, true,
                                                GlobalValue::ExternalLinkage,