libsoup: update to version 2.36.1

Update to latest stable release. SSL support now depends on
glib-networking with gnutls support instead of using gnutls
directly.

Remove libsoup-CVE-2011-2054.patch, this is fixed upstream.

Signed-off-by: Sven Neumann <s.neumann@raumfeld.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>