The decc$to_vms function converts the given UNIX style file
specification into the equivalent OpenVMS file specification
(in all uppercase letters). It allows you to specify UNIX style
wildcards, which are translated into a list of corresponding
OpenVMS files.
Note that the following feature logicals can affect the behavior
of decc$to_vms:
DECC$DISABLE_TO_VMS_LOGNAME_TRANSLATION
DECC$NO_ROOTED_SEARCH_LISTS