+ * GITWEB_CONFIG_SYSTEM
+ This Perl file will be loaded using 'do' as a fallback if GITWEB_CONFIG
+ does not exist. If the environment variable GITWEB_CONFIG_SYSTEM is set
+ when gitweb.cgi is executed, then the file specified in the environment
+ variable will be loaded instead of the file specified when gitweb.cgi was
+ created. [Default: /etc/gitweb.conf]