* src/pgm/pgm-plugin.c:
        * src/pgm/pgm-plugin.h:
        * src/pgm/pgm-renderer.c:
        * src/pgm/pgm-renderer.h:
        * src/renderers/opengl/plugin-opengl.c:
        * src/renderers/opengles/backend-gdl.c:
        * src/renderers/opengles/backend-native.c:
        * src/renderers/opengles/backend-x11.c:
        * src/renderers/opengles/plugin-opengles1.c:
        Fixed OpenGL ES 1 plugin where set_window_size was defined two times.
        Changed pgm_renderer_set_window_position function using signed integers.
        Removed pgm_renderer_get_window_position function.