Initial revision setting up a repository to play around in.

This sets up a skeleton using CMake (downloadable from www.cmake.org)
and gmock for testing from https://code.google.com/p/googlemock/
For the time being this will require pulling and extracting gmock yourself
from https://code.google.com/p/googlemock/downloads/detail?name=gmock-1.7.0.zip
and unpacking it into a "third_party" subdirectory within the root of the
git client. We coudl check in a copy here, but woudl rather not until we need
to. Eventually I'll revisit this for a long-term solution (which might be to
not even bother with gmock/gtest).