Rename Selector::getName() to Selector::getAsString(), and add
a new NamedDecl::getAsString() method.

Change uses of Selector::getName() to just pass in a Selector 
where possible (e.g. to diagnostics) instead of going through
an std::string.

This also adds new formatters for objcinstance and objcclass
as described in the dox.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@59933 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/BasicObjCFoundationChecks.cpp b/lib/Analysis/BasicObjCFoundationChecks.cpp
index 033dc02..d81b334 100644
--- a/lib/Analysis/BasicObjCFoundationChecks.cpp
+++ b/lib/Analysis/BasicObjCFoundationChecks.cpp
@@ -91,7 +91,7 @@
       std::ostringstream os;
       
       os << "Argument to '" << GetReceiverNameType(ME) << "' method '"
-      << ME->getSelector().getName() << "' cannot be nil.";
+      << ME->getSelector().getAsString() << "' cannot be nil.";
       
       Msg = os.str();
       s = Msg.c_str();      
@@ -243,7 +243,7 @@
   // FIXME: This is going to be really slow doing these checks with
   //  lexical comparisons.
   
-  std::string name = S.getName();
+  std::string name = S.getAsString();
   assert (!name.empty());
   const char* cstr = &name[0];
   unsigned len = name.size();