support new FTP server structure

openpkg/openpkg.boot

@@ -55,6 +55,8 @@ if [ ".$root" = ".-s" ]; then
        pkgdir=../PKG
     elif [ -d ../../PKG ]; then
        pkgdir=../../PKG
+    elif [ -d ../../ftp/current/SRC ]; then
+       pkgdir=../../ftp/current/SRC
     else
        pkgdir=..
     fi