Enhance unit tests reporting to make it easier to investigate failures over multiple builds.

[Jeroen Wiert Pluimers]

To make it easier to investigate #36:

1. Indicate in each unit test build for Which Delphi version (2010..XE6, which architecture (Win32/Win64/...) and which configuration (Debug/Release) it was built.
2. Include this information when logging to file.
3. See if it is possible to copy a summary of all tests from the DUnit GUI.

[Stefan Glienke]

With a fix of issue #33 you will have an xml file next to every test project when executing it with console_testrunner defined.