A slew of changes based on William Fulton's code review.

- Fixed naming conventions; SwigPyBuiltin is used a lot
- Removed use of std::vector
- builtin.swg isn't included if -builtin isn't specified
- Changed many feature names to use a "python:" prefix
- Eliminated static vars in std_pair.i
- Eliminated C++-style comments (//)
- Enabled autodoc and docstring with -builtin
- Fixed non-ansi generated C code
- Detect and complain if two incompatible swig modules are loaded
- Removed argcargvtest_runme3.py, and fixed argcargvtest_runme.py
  so that 2to3 handles it better
- Removed anonymous namespaces
- Eliminated builtin_init typemaps; consolidated functionality into
  SWIG_Python_NewPointerObj
- Eliminate printf warnings from %U conversion character by switching
  to %S, which works just as well
- Fixed li_std_set_runme.py for python3, which returns set members in
  a different order from python2





git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/szager-python-builtin@12562 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Lib/python/pyiterators.swg

@@ -318,7 +318,7 @@ namespace swig {
       if (!seq)
         return SWIG_Py_Void();
       SwigPyIterator *iter = make_output_iterator(seq->begin(), seq->begin(), seq->end(), pyself);
-      return SWIG_NewPointerObj(iter, SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN);
+      return SWIG_InternalNewPointerObj(iter, SWIGTYPE_p_swig__SwigPyIterator, SWIG_POINTER_OWN);
   }
 
 }
@@ -350,8 +350,8 @@ namespace swig
   %nodirector SwigPyIterator;
 
 #if defined(SWIGPYTHON_BUILTIN)
-  %feature("tp_iter") SwigPyIterator "&swig::make_output_iterator_builtin";
-  %feature("pyslot", "tp_iternext", functype="iternextfunc") SwigPyIterator::__next__;
+  %feature("python:tp_iter") SwigPyIterator "&swig::make_output_iterator_builtin";
+  %feature("python:slot", "tp_iternext", functype="iternextfunc") SwigPyIterator::__next__;
 #else
   %extend SwigPyIterator {
   %pythoncode {def __iter__(self): return self}