- added sections to config lookup table
- changed setting of log level. logic is now as follows:
    - initially a static log level is used until the configuration is parsed
    - a callback makes sure that only valid syslog facilities can be entered in the configuration file
    - if a valid syslog facility has been read from config it will be set immediately
    - the x509_info data structure gets the validated log level as a string
    - subsequent modules can get the obtained log level from the config file through x509_info data structure
    - they are free to set their own log_level. input is again checked against syslog facility whitelist