Adding Tests.

Author: Omar Habra

test/Interop/Cxx/templates/Inputs/function-templates.h

@@ -61,6 +61,8 @@ template <class T> void constLvalueReference(const T &) {}
 
 template <class T> void forwardingReference(T &&) {}
 
+template <class T> void PointerTemplateParameter(T*){}
+
 namespace Orbiters {
 
 template<class T>

test/Interop/Cxx/templates/function-template-module-interface.swift

@@ -17,6 +17,7 @@
 // CHECK: func lvalueReference<T>(_ ref: UnsafeMutablePointer<T>)
 // CHECK: func constLvalueReference<T>(_: UnsafePointer<T>)
 // CHECK: func forwardingReference<T>(_: UnsafeMutablePointer<T>)
+// CHECK: func PointerTemplateParameter<T>(_: UnsafeMutablePointer<T>)
 
 // CHECK: enum Orbiters {
 // CHECK:   static func galileo<T>(_: T)