ffmpeg updates

Original commit message from CVS:
ffmpeg updates

gst-libs/ext/Makefile.am

@@ -0,0 +1 @@
+SUBDIRS = ffmpeg

m4/as-slurp-ffmpeg.m4

@@ -1,4 +1,4 @@
-dnl slurp-ffmpeg.m4 0.1.2
+dnl slurp-ffmpeg.m4 0.1.1
 dnl a macro to slurp in ffmpeg's cvs source inside a project tree
 dnl taken from Autostar Sandbox, http://autostars.sourceforge.net/
 
@@ -18,29 +18,33 @@ dnl a date spec)
 AC_DEFUN([AS_SLURP_FFMPEG],
 [
   # save original dir
+  FAILED=""
   DIRECTORY=`pwd`
   # get/update cvs
   if test ! -d $1; then mkdir -p $1; fi
-  cd $1
+  dnl we need to check $srcdir/$1 or it will always checkout ffmpeg even if it is there
+  dnl at least when top_srcdir != top_builddir.
+  dnl FIXME: unfortunately this makes the checkout go into top_srcdir
+  cd $srcdir/$1
 
-  if test ! -d ffmpeg/CVS; then
+  if test ! -e ffmpeg/README; then
     # check out cvs code
     AC_MSG_NOTICE(checking out ffmpeg cvs code from $2 into $1)
-    cvs -Q -d:pserver:anonymous@cvs.ffmpeg.sourceforge.net:/cvsroot/ffmpeg co -D '$2' ffmpeg || FAILED=yes
-    cd ffmpeg
+    cvs -Q -z4 -d:pserver:anonymous@mplayerhq.hu:/cvsroot/ffmpeg co -D '$2' ffmpeg || FAILED=yes
   else
     # compare against Tag file and see if it needs updating
-    if diff -q Tag ffmpeg/CVS/Tag > /dev/null 2> /dev/null
-    then
-      # diff returned no problem
+    if test "`cat Tag`" == "$2"; then
       AC_MSG_NOTICE(ffmpeg cvs code in sync)
     else
-      # diff says they differ
       cd ffmpeg 
-      AC_MSG_NOTICE(updating ffmpeg cvs code)
-      cvs -Q update -dP -D '$2' || FAILED=yes
+      AC_MSG_NOTICE(updating ffmpeg cvs code to $2)
+      cvs -Q -z4 update -dP -D '$2' || FAILED=yes
+      cd ..
     fi
   fi
+  if test "x$FAILED" != "xyes"; then
+    echo "$2" > Tag 
+  fi
   
   # now go back
   cd $DIRECTORY