The latest stable releases of the package moved
from http://svn.gnome.org/svn/librsvg/ to
http://ftp.gnome.org/pub/GNOME/sources/librsvg/, so I removed the overrided
SRC_URI and use gnome.bbclass's, and I also changed the recipe file's name,
removed the explicit PV and removed the unnecessary S.
Reset PR to "r0".
Add LIC_FILES_CHKSUM info.
Remove SRCREV_pn-librsvg in poky-default-revisions.inc and add
PREFERRED_VERSION_librsvg in poky-fixed-revisions.inc.
