Don't symlink multiple times

Was checking for existence of $jaildir/home -- never exists; will always create new symlink
Changed to look for directory or symlink at $jaildir/base/home and respond accordingly

conf/type/__jail/gencode-remote

@@ -185,12 +185,14 @@ cat <<EOF
       if [ ! -d "${jaildir}/base/usr/home" ]; then
          mkdir -p "${jaildir}/base/usr/home"
       fi
-      if [ ! -d "${jaildir}/home" ]; then
+      if [ ! -d "${jaildir}/base/home" ]; then
+          if [ ! -L "${jaildir}/base/home" ]; then
              SAVE=\$PWD; cd ${jaildir}/base
              ln -s usr/home home
              cd \$SAVE; unset SAVE
           fi
       fi
+   fi
    if [ ! -d "${jaildir}/rw" ]; then
       mkdir "${jaildir}/rw"
    fi