Organize the inclusion of .Properties files

[NickDraper]

At the moment we have properties files that are all over the place, and a build system that copies every properties file from each directory into the build\tests directory in a random order with each overwriting the last (see the tests\sconscript)

This needs to be rationalised so that we have 1 directory with a properties file and all build and test running mechanisms copy the file from that location.

Theis should include the scons build and tests, the runtests.sh and runtests.bat files.

[NickDraper]

This issue was originally trac ticket 95