Version numbers of unreleased stable and development versions

[Reiner Steib <reinersteib+gmane@imap.cc>]

Hi,

we have skipped the release of 5.10.7 because there were already too
many "5.10.7" versions around in the wild.

In order to avoid this confusion after bumping the version in CVS as
we did before (after releasing N.n, bump to N.n+1), I think we should
add only a string like "+cvs" [1].  The User-Agent should then say
something like:

| Gnus/5.1008 (Gnus v5.10.8+cvs) Emacs/21.3 (gnu/linux)

| Gnus/5.110004 (No Gnus v0.4+cvs) Emacs/22.0.50 (gnu/linux)

The variable `gnus-version-number' and the output of
`gnus-continuum-version' should probably not increased.

We could add something like `gnus-cvs-version' which is t or nil and
add the "+cvs" appropriately.

Instead of "+cvs" we might even think about adding the date e.g.
"+20060411".  For this we'd need either CVS keywords or bump it
manually from time to time.  Hm, `gnus-cvs-version' could also be a
number like 20060411.

Bye, Reiner.

[1]
,----[ <f1> v mh-version RET ]
| mh-version is a variable defined in `mh-e.el'.
| Its value is "7.93+cvs"
| 
| Documentation:
| Version number of MH-E.
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