Add libclang capabilities to retriete template arguments from specializations.

Includes Python bindings.

Reviewed in http://reviews.llvm.org/D5621
Patch by Rob Springer

llvm-svn: 219529
diff --git a/clang/tools/libclang/libclang.exports b/clang/tools/libclang/libclang.exports
index 5a029f7..d7701ad 100644
--- a/clang/tools/libclang/libclang.exports
+++ b/clang/tools/libclang/libclang.exports
@@ -7,6 +7,11 @@
 clang_CXXMethod_isStatic
 clang_CXXMethod_isVirtual
 clang_Cursor_getArgument
+clang_Cursor_getNumTemplateArguments
+clang_Cursor_getTemplateArgumentKind
+clang_Cursor_getTemplateArgumentType
+clang_Cursor_getTemplateArgumentValue
+clang_Cursor_getTemplateArgumentUnsignedValue
 clang_Cursor_getBriefCommentText
 clang_Cursor_getCommentRange
 clang_Cursor_getMangling