Resources do not automatically reconnect if smbcd closes

[Yuri Dario]

If smbcd closes the pipe end (e.g. for a crash), the plugin does not detect the broken pipe until next write operation.

Since pipe is an internal npdsmb thing, NetDrive? will not try to mount the resouce again if a return code is returned (works as designed).

We need to reconnect the pipe internally.

[Yuri Dario]

(changeset:70) Wrap write operations and retry automatically if pipe broken is detected.