[Wzdftpd-devel] Little loglevel fix

[Roman B. <bog...@in...>]

This patch disallows wzdftpd to log messages which level is lower then
.loglevel param in wzd.cfg.

We check mainConfig->loglevel and if message's level is higher or equal,
we log it, in other case nothing happens.

-Roman Bogorodskiy [Novel]