setting defaults in test class more appropriately. Commits are started oldest first now when selecting multiple ones from the list

turns out that some FinesseTestProcess members were static and were shared across multiple processes, like the run time data for the kat files and exception data. This has been initialised properly now

giving owner full read write exec permissions on kat object. Not sure why this is necessary on lnxs machine as the same user has just compiled the kat binary.

fixing kat storing, now if the use previous build box is ticked a previously built kat file will be used instead of building exactly the same again.