Mavenize the thing

The biggest problem is JHDF5. Since it is not really a Java library, portability is seriously reduced, and that might be the reason why nobody wants to have it in a public Maven repository.

It is a dirty way to Mavenize the thing by "deploying" to a "repository" that is tracked in the source code repository of the dependencee itself. But in the Fiji project, we're in the business of getting things to work, even if the solution might be slightly ugly ;-)

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>