- create gnc-svnversion script that builds the revision number
from either SVN or SVK. The script should fail gracefully if
you don't have SVK installed
- convert the configure script to use the new gnc-svnversion script
- convert the splash-screen Makefile to use the gnc-svnversions script
git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@14427 57a11ea4-9604-0410-9ed3-97b8803252fd
