Enhance @require annotation functionality

[smalers]

The #@require comment annotations have proved useful for managing automated tests. There is a need to enhance the features to be more granular and flexible, for example to be able to check the database version and contents, specific to a datastore.

[smalers]

I enhanced the @require functionality to delegate the checks fully to each datastore in order to allow check on version and other properties. I also fixed a number of longstanding issues that impacted automated testing, including:

• Fix problems with RunCommands not working with plugin commands.
• Add ability to substitute datastore name so that tests can be pointed to different datastore at rutime.
• Add support for Property=Value and Property==Value assignment on the command line for application and processor properties.
• Enhance the tstool script for MinGW, Cygwin, and Linux to support running in development and production mode to facilitate testing.

Close the issue.