WendzelNNTPd-2.0.9 (Christmas Release 2017)

Please note that this is a minor clean-up release. No upgrades are necessary.

2.0.9-stable "Bergen, Christmas Releae 2017" : 18-Dec-2017
 FIXES:
 - 'configure' script did not check whether the `install' tool is
   present. The tool's presence is now also checked.
 MISC:
 - Old RFC 850 mentions YY (two-digit) yearly format. However, INNd
   uses YYYY (four-digit) yearly format. WendzelNNTPd now does the
   same.
 - Tiny code cleanup (removed two doubled prototype definitions).
 - Ran WendzelNNTPd with lib efence, just to see whether memory leaks
   would be detected. Executed (hopefully) all possible NNTP commands.
   No memory leaks were revealed. However, tested only Sqlite3 setup,
   not MySQL.