Move common DOS utility helper code into tools.c and expose it through
net.h. This removes duplicated command-local helpers from GRANT,
RIGHTS, FLAG, FLAGDIR and the trustee helper layer.
The shared helpers cover case-insensitive argument comparison, help and
option detection, /FILES and /SUBDIRS parsing, current network directory
handle lookup, current volume prefix formatting, uppercase DOS path
copying, basename/header-path handling, wildcard detection and simple
path joining/splitting.
Keep the command frontends smaller and less coupled so the current
multicall utility can later be split into smaller grouped multicall
binaries, such as trustee tools, login/session tools and file/flag
tools.
Update the DOS utilities README for the newer Client32 and trustee
commands. Document RIGHTS, GRANT, REVOKE and REMOVE in the status,
feature, command and install sections. Add command reference entries
for the trustee tools, including Novell-style syntax, supported rights,
recursive/file options and missing-trustee behavior.
Also mention the shared trustee helper layer and common tools.c helpers
used by the newer command frontends.
Implement REVOKE and REMOVE for the Client32 DOS utilities.
REVOKE now supports Novell-style syntax:
REVOKE rightslist* [FOR path] FROM [USER|GROUP] name [options]
and removes rights from explicit trustee assignments. It scans the
trustee list first, updates the trustee rights mask, and deletes the
trustee entry when no rights remain.
REMOVE now supports Novell-style syntax:
REMOVE [USER | GROUP] name [FROM path] [option]
and deletes explicit trustee assignments for users or groups.
Both tools support USER/GROUP lookup, /FILES, /SUBDIRS,
/SUBDIRECTORIES, wildcard file targets, recursive directory handling,
Novell-style help text and summary output. Missing trustee entries are
reported with Novell-style "No trustee for the specified ..." messages.
Add shared trustee helpers and Client32 NCP87 trustee scan/delete
support. Also adjust GRANT ALL so it matches Novell behavior by not
granting Supervisor implicitly; Supervisor must be granted explicitly.
