C++: Get rid of {Name,Type}::isEqualTo()

...since it's superseded by the class Matcher.

For consistency, rename FullySpecifiedType::isEqualTo() to match().

Change-Id: I07640f9218d814e0350265de45f05929e5d595a9
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>

src/libs/cplusplus/DeprecatedGenTemplateInstance.cpp

@@ -371,7 +371,7 @@ int ApplySubstitution::findSubstitution(const Identifier *id) const
     for (int index = 0; index < substitution.size(); ++index) {
         QPair<const Identifier *, FullySpecifiedType> s = substitution.at(index);
 
-        if (id->isEqualTo(s.first))
+        if (id->match(s.first))
             return index;
     }