Make a Java client for seamless grid execution

The idea is something of the sort:

```
wg_begin
  ...
  < matlab statements >
  optionally: WGexec, WGwaitForResults
  ...
wg_end
```

Implementation could use a Java-based client that uses Putty to push the required files to UNIX, submit the job and somehow synchronously wait for the results.

This completely replaces the need for the MATLAB shortcuts.
