CMake Updated For Test Programs

The old make file also built the various test programs residing in the test sub-directory.  The CMake build system was updated to also build these test programs.  This required quite a bit of experimentation to get working, but the final solution was rather simple.  First, each of the test programs an add_executable command was added to CmakeLists.txt with the list of the source files required to build the program along with any dependent header files.

To create the new make tests target required an add_custom_target command naming the target (tests) and specifying the test programs that this target is dependent on using the DEPENDS option.  However, there was a problem where the test programs were built with the standard make command (the same as make all) in addition to when the make tests command was issued.  This problem was resolved by adding the EXCLUDE_FROM_ALL option to each of the test programs add_executable command.

Each of the test programs were tested to verify that they produced the same output on all three platforms.  Several of the test programs were updated to achieve this, and the expected output files were updated accordingly.  Hit Continue... below for details on the changes made to the test programs.

Now that all the CMake issues have been resolved, it is time to make official release 0.1.16.  It's going to take a little time to prepare the release notes, merge branch0.1.16 to master, generate all the archive files for uploading, etc..  In the mean time, the latest changes have been pushed to GitHub and tagged v0.1.16‑pre‑2.  The should be close to the actual release, since none of the core program files are expected to change.