Version strings

[Steve Youngs <steve@xxxxxxxx>]

Now that we're under arch control I was wondering about XLIB/XWEM
version strings.

Here is my suggestion, taken from my Eicq project...

In the Eicq Makefile:

eicq-version.el:
        echo ";;; Automatically generated file -- DO NOT EDIT OR DELETE" > $@
        echo ";;;###autoload" >> $@
        echo "(defconst eicq-version" >> $@
        if [[ -d "./{arch}" && -x `which tla 2>/dev/null` ]]; then \
                printf '  "%s"' `tla logs -f|tail -n1` >> $@; \
        else \
                echo -n '  "$(VER)"' >> $@; \
        fi
        echo ")" >> $@
        echo "(provide 'eicq-version)" >> $@

It creates a eicq-version.el file at build time from running some tla
commands.  If tla isn't available it uses a hard-coded value from a
Makefile variable ($VER in this case).

M-x eicq-version RET
=> Eicq: steve@xxxxxxxxxxxxxx/eicq--main--0.6--patch-14

Evgeny has his own branch of Eicq so if he built and then ran M-x
eicq-verson RET, he'd get...

   Eicq: lg@xxxxxxxxxxxxxx/eicq--lg--0.6--patch-2

Evgeny, can I go ahead and set this up for XLIB/XWEM, or do you have
something else in mind?

I'd like to see this in before we let Norbert loose on releasing XE
packages for us. :-)

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