Merge branch 'newconfig'

Merge branch 'newconfig'

* newconfig:
  sample-ngircd.conf: "SyslogFacility" should be commented out
  Move SSL-related configuration variables to new [SSL] section
  CheckFileReadable(): only check when a filename is given ...
  PAM: make clear which "Password" config option is ignored
  Really remove [Features] in our manual pages
  INSTALL: document changed location of configuration variables
  Update sample config file and manual page for new config structure
  Testsuite: update configuration files for new config file format
  Display configuration errors more prominent on "--configtest"
  conf.c: code cleanup
  Check for redability of SSL-related files like for MOTD file
  Restructure ngIRCd configuration, introduce [Limits] and [Options]