Switched URL to @SAVANNAH for more mirrors.

Added PKG_BUILD_PARALLEL for faster compilation.

Added PKG_LICENSE info.

Minor reorganization for consistency between packages.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

davfs2: updated to 1.5.3 and reintroduced support for libssp

Signed-off-by: Federico Di Marco <fededim@gmail.com>

Signed-off-by: Federico Di Marco <fededim@gmail.com>
Signed-off-by: Etienne CHAMPETIER <champetier.etienne@gmail.com>