Add a GetDisplayName() API to SBFrame, SBFunction and SBSymbol

This API is currently a no-op (in the sense that it has the same behavior as the already existing GetName()), but is meant long-term to provide a best-for-visualization version of the name of a function

It is still not hooked up to the command line 'bt' command, nor to the 'gui' mode, but I do have ideas on how to make that work going forward

rdar://21203242

llvm-svn: 241482

lldb/scripts/interface/SBFrame.i

@@ -127,6 +127,9 @@ public:
     ") GetFunctionName;
     const char *
     GetFunctionName();
+             
+     const char *
+     GetDisplayFunctionName ();
 
     const char *
     GetFunctionName() const;

lldb/scripts/interface/SBFunction.i

@@ -58,6 +58,9 @@ public:
 
     const char *
     GetName() const;
+    
+    const char *
+    GetDisplayName() const;
 
     const char *
     GetMangledName () const;

lldb/scripts/interface/SBSymbol.i

@@ -32,6 +32,9 @@ public:
     const char *
     GetName() const;
 
+    const char *
+    GetDisplayName() const;
+    
     const char *
     GetMangledName () const;