[GRASS-dev] G7: add REVISION text file?

Hi,

on several build platforms "svnversion" is not supported which is
called by "configure".
I wonder if we should add in the release tarball a file "REVISION"
which could be added in include or the like and read if present to
populate

include/Make/Platform.make:GRASS_VERSION_SVN = 64567
include/Make/Platform.make.in:GRASS_VERSION_SVN = @GRASS_VERSION_SVN@

? It looks ugly to have r00000:
Welcome to GRASS GIS 7.0.0svn (r00000)

rather than

Welcome to GRASS GIS 7.0.0svn (r64634)

Ideas?

Markus