Change inter-protocol dependencies from _deps to _select

Originally committed as revision 23137 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1407,8 +1407,8 @@ x11_grab_device_indev_extralibs="-lX11 -lXext -lXfixes"
 gopher_protocol_deps="network"
 http_protocol_deps="network"
 http_protocol_select="tcp_protocol"
-rtmp_protocol_deps="tcp_protocol"
-rtp_protocol_deps="udp_protocol"
+rtmp_protocol_select="tcp_protocol"
+rtp_protocol_select="udp_protocol"
 tcp_protocol_deps="network"
 udp_protocol_deps="network"