nmbd and smbd had different behavior with respect to log files. nmbd would

nmbd and smbd had different behavior with respect to log files.  nmbd would
default to overwrite and smbd would default to append.  Also, the -a option
(actually a toggle, such that "-a -a" would set the default) was documented
as append mode for nmbd, and *overwrite mode* for smbd.

nmbd now defaults to append mode, to match smbd.  The -a option now always
means append, and I've added the -o option to both, meaning overwrite.

Note that the change to nmbd's default behavior may confuse some people.
I've not seen anything about 2.0.0 changes in the WHATSNEW.txt file.
Where would I document a change like this?

Chris -)-----
(This used to be commit b1d374fb14b1fb92a84260f1dcc59a39a4b99a3d)