Better documentation of function "crutilsd_set_verbose_level" in crutilsd and enhancements in this function
 * moved source for setting logging options into own source-files in own directory (log instead of config)
 * enhancements in cmd-options parser
 * renaming of some configuration options
splitted set_loglevel() into set_loglevel() and inc_loglevel()
Renamed parse_cmd to read_cmd_options
* disabled option flags for socket- and driver-path (should be set in config file)
* renamed option flag "foreground" to "daemonize"
moved and renamed config functions
added assert-checks in conf_parse_argv
added functions to open and close the configuration file
restructured basic config in crutilsd
Merge branch 'crutilsd_config_3' into major_rework