Bump libtiff requirement to 3.6.0, by requiring presence of

Bump libtiff requirement to 3.6.0, by requiring presence of

2007-05-18  Michael J. Chudobiak  <mjc@cvs.gnome.org>

        * INSTALL.in:
        * README.in:
        * configure.in: Bump libtiff requirement to 3.6.0, by requiring
          presence of TIFFReadRGBAImageOriented.

        * gdk-pixbuf-scaled-anim.c: (get_scaled_pixbuf):
        Preserve pixbuf options when generating a new scaled pixbuf.

        * io-jpeg.c: (get_orientation), (gdk_pixbuf__jpeg_image_load),
        (gdk_pixbuf__jpeg_image_load_increment): Read the exif
        orientation tag and associate it with the "orientation" pixbuf
        option. Renders libexif unnecessary in some applications.

        * io-tiff.c: (tiff_image_parse): Read the tiff orientation tag,
        compensate for the partial rotations performed by libtiff,
        and generate an "orientation" option for the pixbuf.

svn path=/trunk/; revision=17863