* Added Gtk::true() and Gtk::false(). Yes, these are just what they look
like - functions that return true and false. Handy for certain callbacks.
* Fixed connect_object() semantics, it only requires two arguments now.
* Standardized all callback marshallers - callbacks are now smoother than
Jennifer Alba's bottom and they all take user supplied extra arguments.
* Moved callback validation right up to the call time, so that callbacks
included from other files could be used as well.
* This necessitated better error messages - so now if it the callback is
not valid, the filename and line number where it was specified are shown.
* Updated gtk.php and list.php to use connect_object() as an example.
additional arguments to be passed to the callback.
* Implemented GtkCombo::set_popdown_strings(), see gtk.php for example.
* Added GdkPixmap::create_from_xpm().
* Added toggle buttons and entry examples to gtk.php.
* Added an extra parameter to php_gtk_is_callable() that is filled in
with the name of the callable. Now just need to use it everywhere.
* Added php_gtk_parse_args_hash() internal function.
* Implemented get_type() methods for every Gtk* class.
* Enhanced overrides parsing to allow setting functions as class methods
or moving methods from one class to another.
* Renamed php_gtk_check_callable() to php_gtk_is_callable().
* Added an extra parameter to php_gtk_is_callable() that is filled in
with the name of the callable. Now just need to use it everywhere.
* Added php_gtk_parse_args_hash() internal function.
to use of constant PHP_OS,
$OS didnt work for detecting windows here,
and i couldnt find any documentation about it.
PHP_OS is a constant which shows right OS...
