Still problems with UTF8 encoded filenames in Samba4

[tridge at samba.org]

Michael,

 > I'm still experiencing problems with samba4 when creating files/directories
 > which contain German umlauts (like äöü). I started samba with "-d" to get
 > some debug info, and here's what I got (find the two lines that start with
 > "E2BIG")

Thanks for the backtrace! 

I think the problem is that byte_mul is 1 for UTF8 (see line 316 of
ndr_string.c), but of course UTF8 has variable width.

I'll work on a fix and commit soon. I'll also add a torture test to
test this particular case.

Cheers, Tridge