* travis: Do a `make distcheck` instead of just `make check`
Doing a `make distcheck` instead of just a `make check` ensures that
the build system is sane and that the results from `make dist` have
everything needed.
* build-system: Fixes for `make distcheck`
This commit fixes the `distcheck` target by addressing the following
issues:
* Repaired ability to perform builds when the build directory is not
the source directory.
* Addressed an issue with the tarball name that occurs the very
first time `make` is run.
Robert Quattlebaum