new class, just what the name says, uses GnomeVFSStream for loading

new class, just what the name says, uses GnomeVFSStream for loading

* xpdf/nautilus-pdf-property-page.cc,
xpdf/nautilus-pdf-property-page.h: new class, just what the name
says, uses GnomeVFSStream for loading PDFDocs.

* xpdf/GnomeVFSStream.cc, xpdf/GnomeVFSStream.h: BaseStream
implementation based on (synchronous) gnome-vfs calls.

* xpdf/BonoboStream.cc, xpdf/BonoboStream.h: coding style fixage,
include only what's needed.

* xpdf/Makefile.am (gnome_pdf_viewer_SOURCES): also compile
GnomeVFSStream.{cc,h}, nautilus-pdf-property-page.{cc,h}

* xpdf/GNOME_PDF.server.in.in: add stanza for the Property Page.

* xpdf/bonobo-application-x-pdf.cc: clean up a bit
(gpdf_factory): now we produce the Property Page, too.

* xpdf/gpdf-control.cc: include time.h for strftime, mktime.