[Chicken-hackers] Bumping version no. / build tag in banner

[Jim Ursetto]

Hi,

As an experiment, I pulled out the Chicken version number, build tag and branch 
name constants into variables in a separately compiled unit (let's call it 
"version") and added (uses version) to library.scm.  That ensures these items 
are always updated in the banner even after a minor change or branch switch, 
whereas currently you have to recompile library.scm to update the version and 
`make spotless` to update the build tag or branch.  You could even include the 
current HEAD commit hash in the version number, without being forced to 
recompile library.scm at each commit.

This works fine, *except* that in the case you are linking the Chicken runtime 
.c files together by hand with gcc runtime.c library.c ..., you also have to 
add version.c because Unit library depends on it.

I can live with this, but would such a patch stand a chance of being 
incorporated into mainline?

If not, suggestions on how I can do it better?

Jim