rename CONFIG_AC3 to CONFIG_A52

it's more consistent and Dolby never liked people "infringing" their TM


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@7014 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

configure

@@ -1919,8 +1919,8 @@ fi
 
 # AC3
 if test "$a52" = "yes" ; then
-  echo "#define CONFIG_AC3 1" >> $TMPH
-  echo "CONFIG_AC3=yes" >> config.mak
+  echo "#define CONFIG_A52 1" >> $TMPH
+  echo "CONFIG_A52=yes" >> config.mak
 
   if test "$a52bin" = "yes" ; then
     echo "#define CONFIG_A52BIN 1" >> $TMPH

libavcodec/Makefile

@@ -249,10 +249,10 @@ OBJS-$(CONFIG_LIBVORBIS)               += oggvorbis.o
 OBJS-$(CONFIG_LIBGSM)                  += libgsm.o
 
 # currently using liba52 for ac3 decoding
-OBJS-$(CONFIG_AC3)                     += a52dec.o
+OBJS-$(CONFIG_A52)                     += a52dec.o
 
 # using builtin liba52 or runtime linked liba52.so.0
-OBJS-$(CONFIG_AC3)$(CONFIG_A52BIN)     += liba52/bit_allocate.o \
+OBJS-$(CONFIG_A52)$(CONFIG_A52BIN)     += liba52/bit_allocate.o \
                                           liba52/bitstream.o    \
                                           liba52/downmix.o      \
                                           liba52/imdct.o        \

libavcodec/allcodecs.c

@@ -469,7 +469,7 @@ void avcodec_register_all(void)
 #ifdef CONFIG_SONIC_DECODER
     register_avcodec(&sonic_decoder);
 #endif //CONFIG_SONIC_DECODER
-#ifdef CONFIG_AC3
+#ifdef CONFIG_A52
 #ifdef CONFIG_AC3_DECODER
     register_avcodec(&ac3_decoder);
 #endif //CONFIG_AC3_DECODER