Rename GtkGS to PSDocument

Rename GtkGS to PSDocument

2005-01-01  Marco Pesenti Gritti  <marco@gnome.org>

        * ps/Makefile.am:
        * ps/gstypes.h:
        * ps/gtkgs.c:
        * ps/gtkgs.h:
        * ps/ps-document.c: (catchPipe), (ps_document_init),
        (ps_document_class_init), (ps_document_cleanup),
        (ps_document_finalize), (send_ps), (ps_document_get_orientation),
        (set_up_page), (close_pipe), (is_interpreter_ready),
        (interpreter_failed), (output), (input), (start_interpreter),
        (stop_interpreter), (file_length), (file_readable),
        (check_filecompressed), (check_pdf), (compute_xdpi),
        (compute_ydpi), (compute_size), (ps_document_enable_interpreter),
        (ps_document_get_type), (ps_document_emit_error_msg),
        (document_load), (ps_document_next_page),
        (ps_document_get_current_page), (ps_document_get_page_count),
        (ps_document_goto_page), (ps_document_set_page_size),
        (ps_document_zoom_to_fit), (ps_document_set_zoom),
        (ps_document_load), (ps_document_get_n_pages),
        (ps_document_set_page), (ps_document_get_page),
        (ps_document_widget_event), (ps_document_set_target),
        (ps_document_set_scale), (ps_document_set_page_offset),
        (ps_document_get_page_size), (ps_document_render),
        (ps_document_document_iface_init):
        * ps/ps-document.h:
        * ps/ps.c:
        * shell/ev-window.c: (ev_window_open):

        Rename GtkGS to PSDocument