r18413: Based on the new torture test I added in samba4 it turns out

r18413: Based on the new torture test I added in samba4 it turns out
the flags determines what kind of share is this.
I suppose 0x80000000 means something like (legacy) as it will
fail for any share name longer then 13 chars (same size accepted
for old RAP calls that come from pre NT OSs.

Jerry,
let me know if you want me to commit this to 3_0_23

Simo.
(This used to be commit f09f8b2d820b10679f3e9cf80749da0a35f5ce6a)