Allow printing to PDF when suppoted by the backend.

Allow printing to PDF when suppoted by the backend.

2006-12-03  Carlos Garcia Campos  <carlosgc@gnome.org>
	* configure.ac:
	* backend/Makefile.am:
	* backend/ev-file-exporter.[ch]:
	* pdf/ev-poppler.cc: (pdf_document_file_exporter_*):
	* ps/ps-document.c: (ps_document_file_exporter_*):
	* tiff/tiff-document.c: (tiff_document_document_file_exporter_*):
	* shell/ev-jobs.[ch]: (ev_job_print_new), (ev_job_print_run):
	* shell/ev-window.c: (ev_window_setup_action_sensitivity),
	(ev_window_print_dialog_response_cb), (ev_window_print_range):
	Allow printing to PDF when suppoted by the backend.