Fixed tgz name and git hash in VistA repository.

Fixed name of tar.gz file and git hash in get-orig-source for VistA repository.
Making progress on database configuration.

Still need to figure out how to set up environment variables, such
as gtm_dist and gtmroutines.
Fixed use of gtm_dist environment variable.

Fixed use of environment variables in rules for gtm_dist and call to GDE and mupip.