[PHP] Update warnings about clashes between identifiers and PHP

keywords and automatic renaming to work with the PHP5 class 
wrappers.  Fixes SF#1613679.


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@11460 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/name_warnings.i

@@ -35,7 +35,9 @@ namespace std
   {
     typedef complex None;
     
+#ifndef SWIGPHP // clone() *is* an invalid method name in PHP.
     A* clone(int) { return NULL; }
+#endif
     
     virtual ~A() {}
     virtual int func() = 0;