Ticket #1: use libsmbclient library in smb vfs.

Remove old implementation

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add m4 script for search Samba's development files.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add a draft of scenarios

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add empty vfs module

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Move function gboolean sftpfs_show_error (GError ** error) to lib/vfs/utilvfs
and rename to gboolean vfs_show_gerror (GError ** error);

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Rename function vfs_s_get_path() to vfs_get_super_by_vpath()

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Module implementation:

* Add functions for handle directory listings;
* Add functions for calling *stat on directories or files;
* Add unit tests;
* Add integration tests for smbfs module.

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
Add auth dialog

Signed-off-by: Slava Zanko <slavazanko@gmail.com>
VFS: Add function for search superblock by any condition via callback
smbfs: ask credentials per host, nor per URL

Signed-off-by: Slava Zanko <slavazanko@gmail.com>