Icone Factory: Create PHP-GTK icon buttons from icon images files

This is simple class that can be used create PHP-GTK icon buttons from given icon images files.

The class extends the GtkButton class, so the functions of the base class may still be called.

It attaches an icon image to the button in the class constructor function. The icon image file must be in the XPM format.

The class can also attach a text label that appear inside the button either on the right or below the button icon image.