Rename audio.c to oss_audio.c in libavdevice.

Originally committed as revision 16707 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavdevice/Makefile

@@ -10,8 +10,8 @@ OBJS    = alldevices.o
 # input/output devices
 OBJS-$(CONFIG_BKTR_DEMUXER)              += bktr.o
 OBJS-$(CONFIG_DV1394_DEMUXER)            += dv1394.o
-OBJS-$(CONFIG_OSS_DEMUXER)               += audio.o
-OBJS-$(CONFIG_OSS_MUXER)                 += audio.o
+OBJS-$(CONFIG_OSS_DEMUXER)               += oss_audio.o
+OBJS-$(CONFIG_OSS_MUXER)                 += oss_audio.o
 OBJS-$(CONFIG_V4L2_DEMUXER)              += v4l2.o
 OBJS-$(CONFIG_V4L_DEMUXER)               += v4l.o
 OBJS-$(CONFIG_VFWCAP_DEMUXER)            += vfwcap.o