General: Start unit testing

```
from Oct 14, 2009

Time to add some unit testing to OpenGeoDa. I propose to use the Boost
unit testing framework (UTF). See
http://www.boost.org/doc/libs/1_40_0/libs/test/doc/html/index.html

```

Original issue reported on code.google.com by `mmcc...@gmail.com` on 5 Mar 2013 at 5:38

No source files, tests, or entry points are named. Start by reviewing the repository's current build and test setup, then read the linked Boost Unit Test Framework documentation. The issue is complete only when a concrete testing setup and initial scope are defined and implemented.

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