[ingo] sftp support for VFS driver

[Steve Caissie]

To get sftp to work:

1) I changed ingo/lib/Driver/vfs.php to accept "ssh2" as a valid vfstype.
2) rm -r horde/lib/VFS*
3) pear install VFS-0.1.0

I haven't tested it much, but it appears to work.

VFS-0.1.0 requires the SSH2 pear module.  I had to download it from
http://pecl.php.net/package/ssh2/0.5.  I couldn't get `pear install` to
work for it.

Steve


75c75
<         if ($this->_params['vfstype'] != 'ftp') {
---
>         if ($this->_params['vfstype'] != 'ftp' && 
$this->_params['vfstype'] != 'ssh2') {
101c101
<         if ($this->_params['vfstype'] != 'ftp') {
---
>         if ($this->_params['vfstype'] != 'ftp' && 
$this->_params['vfstype'] != 'ssh2') {