Allow enabling alsa and jack devices.

Originally committed as revision 19460 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -2241,9 +2241,9 @@ check_header dev/ic/bt8xx.h
 check_header sys/soundcard.h
 check_header soundcard.h
 
-enabled alsa_demuxer || enabled alsa_muxer && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
+enabled alsa_indev || enabled alsa_outdev && check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
 
-enabled jack_demuxer && check_lib2 jack/jack.h jack_client_open -ljack
+enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack
 
 enabled x11grab                         &&
 check_header X11/Xlib.h                 &&