some more files in gnus/ that seem to be general features

[Glenn Morris]

Here are some more files in lisp/gnus that would seem to be general
features that should live elsewhere. There was a long thread on this,
but it seems to have petered out. Yes, some of these files are old,
but I don't see that this invalidates the discussion. Some of these
files have been mentioned before, but nothing came of it.


dig.el:
 "This provide an interface for `dig'".

No dependence on gnus, except for an easily replaceable
`gnus-run-mode-hooks' call.


dns.el:
 Does DNS queries.

No dependence on gnus, except for easily replaceable
`mm-with-unibyte-buffer' calls.


format-spec.el:
  Allows you to supply a format-like string, eg "bash %u %k", and say
  how the % characters should expand.

No dependence on gnus. Used outside of gnus by several files.


binhex.el
  A binhex decoder, either standalone or using `hexbin'.

No dependence on gnus, except for the custom items being in the
gnus-extract group for no reason.


uudecode.el
   A uu decoder, either standalone or using `uudecode'.

No dependence on gnus, except for the custom items being in the
gnus-extract group for no reason.


hex-util.el:
  Convert hexadecimal strings to octet strings and back again.

No dependence on gnus.


sha1.el
  Compute SHA1 hashes.
  Needs hex-util. No dependence on gnus.


password.el:
  "Read passwords from user, possibly using a password cache."

No dependence on gnus.


encrypt.el:
  "file encryption routines". Reads/writes encrypted files.

No dependence on gnus, except for easily replaceable calls to
gnus-error. Needs password.el.

[There was some long discussion of this file before. I don't want to
re-open that, merely to say that while this file is in Emacs, it
should be outside gnus/.]