AMR URL fixes

Originally committed as revision 5413 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -1942,7 +1942,7 @@ if test "$amr_nb" = "yes" ; then
   echo
   echo "AMR NB FLOAT NOTICE ! Make sure you have downloaded TS26.104"
   echo "REL-5 V5.1.0 from "
-  echo "http://www.3gpp.org/ftp/Specs/latest/Rel-5/26_series/26104-5??.zip"
+  echo "http://www.3gpp.org/ftp/Specs/archive/26_series/26.104/26104-510.zip"
   echo "and extracted the source to libavcodec/amr_float"
   echo "If you try this on alpha, you may need to change Word32 to int in amr/typedef.h"
 fi
@@ -1953,7 +1953,7 @@ if test "$amr_nb_fixed" = "yes" ; then
   echo
   echo "AMR NB FIXED POINT NOTICE! Make sure you have downloaded TS26.073 "
   echo "REL-5 version 5.1.0 from "
-  echo "http://www.3gpp.org/ftp/Specs/latest/Rel-5/26_series/26073-5??.zip"
+  echo "http://www.3gpp.org/ftp/Specs/archive/26_series/26.073/26073-510.zip"
   echo "and extracted src to libavcodec/amr"
   echo "You must also add -DMMS_IO and remove -pedantic-errors to/from CFLAGS in libavcodec/amr/makefile."
   echo "i.e. CFLAGS = -Wall -I. \$(CFLAGS_\$(MODE)) -D\$(VAD) -DMMS_IO"