Rename nics_to_listen to server_nics in server_nics struct.
Add server.port configuration.
Rename common/config to common/ini.
Rename common/ini/config.c to common/ini/ini.c and common/ini/config.h
to common/ini/ini.h.
Fix build error for common/ini.
Ignore common/ini/.settings.
Change comments style to C99 single line comments for common/ini.