[AD] al_font function names

[Elias Pschernig <elias.pschernig@xxxxxxxxxx>]

I think instead of al_font_load_font the function should be just 
al_load_font, and in general:

    al_font_destroy_font -> al_destroy_font
    al_font_grab_font_from_bitmap -> al_grab_font_from_bitmap
    al_font_init -> al_init_font_addon or al_init_text
    al_font_is_compatible_font remove this?
    al_font_load_font -> al_load_font
    al_font_load_bitmap_font -> al_load_bitmap_font
    al_font_register_font_file_type -> al_register_font_file_type
    al_font_text_height -> al_get_font_height or al_get_line_height
    al_font_text_width -> al_get_text_width
    al_font_textout -> al_print or al_textout or al_draw_text
    al_font_textprintf -> al_printf
    al_ttf_get_text_dimensions -> al_get_text_dimensions
    al_ttf_load_font -> al_load_ttf_font

--
Elias Pschernig <elias@xxxxxxxxxx>