This module defines predicates to update (register and unregister) the dir Info directory files.
Usage:dirfile_install_info(InfoFile,TargetDir)
Includes InfoFile in the dir file at TargetDir. If no dir file exist, a default one is created.
Usage:dirfile_uninstall_info(InfoFile,TargetDir)
Removes InfoFile from the dir file at TargetDir.