ngIRCd Release 27
Explicitely cast NumConnections etc. (size_t) to "long"
Update ChangeLog, NEWS & AUTHORS.md for ngIRCd 27
Update doc/Platforms.txt
Clarify that "CAFile" is not set by default
Add am example filter file for "Fail2Ban"
Don't abort startup when setgid/setuid() fails with EINVAL
Test suite: Correctly test for LOGNAME and USER