Other libs use config_init, so use lib_init.
Prints system configuration filename (in $confdir)
Prints user configuration filename (in $user_confdir)
Prints package configuration filename (in $srcdir)
Initializes all library and tool settings, prior to
loading any configuration files.
TODO: fix config_check callbacks to permit checking here
Ensures all configuration settings are valid
Reads a single configuration file
Reads a list of configuration files
Reads all known configuration files
Reads configuration files of the given type ($1).
See $config_types for available types.