davfs2 had hardcoded value for stack protector. If stack protector is disabled
in toolchain, it would break the build. Disabling the hardcoded value, counting
on settings in cross-build system.

Signed-off-by: Michal Hrusecky <michal.hrusecky@nic.cz>
[bump PKG_RELEASE]
Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>