Initial infrastructure for class template partial specialization. Here
we have the basics of declaring and storing class template partial
specializations, matching class template partial specializations at
instantiation time via (limited) template argument deduction, and
using the class template partial specialization's pattern for
instantiation. 

This patch is enough to make a simple is_pointer type trait work, but
not much else.




git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72662 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/SemaTemplate/instantiation-default-1.cpp b/test/SemaTemplate/instantiation-default-1.cpp
index ecb1fb7..f0ce0d3 100644
--- a/test/SemaTemplate/instantiation-default-1.cpp
+++ b/test/SemaTemplate/instantiation-default-1.cpp
@@ -36,7 +36,7 @@
 Def2<int_ref_t> *d2; // expected-note{{in instantiation of default argument for 'Def2<int &>' required here}}
 
 
-template<> struct Def1<const int, const int> { }; // expected-error{{redefinition of 'Def1'}}
+template<> struct Def1<const int, const int> { }; // expected-error{{redefinition of 'Def1<int const>'}}
 
 template<typename T, typename T2 = T&> struct Def3;