Accessing share that requires authentication results in confusing dialog

Submitted by Jeff Baitis

Assigned to Daniel Morales

Accessing a Samba share that disallows anonymous access results in a cryptic dialog: "Failed to mount Windows share: Broken Pipe."

Instead, the best behavior would be to launch a dialog box asking for credentials (SMB user / password / workgroup).

Tested on Thunar 1.6.3 / Arch Linux