filelist2content: Fix serious bug in symlink handling

Use image directory files to get symlinkdestination via readlink
and not the fiules currently installe din the system.

all CONTENT files generated so far containing symlinks are broken.

8(

src/filelist2content.sh.in

@@ -115,7 +115,7 @@ function do_f2c() {
 
             echo -n ":md5=${md5%% *}"        
         elif [ "${type}" = "symlink" ] ; then
-            file="${file}//$(readlink ${file})"
+            file="${file}//$(readlink ${root}${file})"
         elif [ "${type}" = "block" -o "${type}" = "char" ] ; then
             echo -n ":major=${major}"
             echo -n ":minor=${minor}"