Create an ant target to distribute Matlab functions (rebased onto develop)



This is the same as gh-414 but rebased onto develop.

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Rather than pointing at our tagged source code on Github, we may want to create a bundle of our Matlab functions for distribution (meaning including a link in the downloads page).

This PR adds an extra `dist-matlab` ant target that is archiving the Matlab functions (without the `loci_tools.jar` like for the command line tools bundle)