External job server usage

[Jari Häkkinen]

Add possibility to run jobs in other JVMs that the server.

[Nicklas Nordborg]

(In [2627]) References #351: External job server usage

Added data layer class, core classes and test classes

[Nicklas Nordborg]

(In [2631]) References #351: External job server usage

Update web pages for plugin definition administration to display and edit job agent settings

[Nicklas Nordborg]

(In [2632]) References #351: External job server usage

Started to implement the actual job agent. Prototyp for communication with the agent is now working.

[Nicklas Nordborg]

(In [2634]) References #351: External job server usage

Communincation with the job agent is now working fairly well. The job agent can check for new jobs but not start them. Need to add more error handling and logging as well.

Added more utility classes to the net.sf.basedb.core.util package and subpackages that may be useful for other client applications in the future.

[Nicklas Nordborg]

(In [2641]) References #351: External job server usage

The core of the job agent is now working. Still missing code for actually running the jobs. A dummy job executor which marks the job as beeing executed allows testing of the job agent.

[Nicklas Nordborg]

(In [2643]) References #351: External job server usage

In-process job executor is now working. Work has started on the out-of-process job executor. Added sendMessage and stackTrace property to job for improved error reporting.

[Nicklas Nordborg]

(In [2648]) References #351: External job server usage

Most functionality is now in place. Only needs a bit more testing.