Massive commit ahead

[Martin Desruisseaux]

Hello all

In maybe 2 or 3 days, I will hopefully be able to commit the metadata 
classes that implements the org.opengis.metadata interface. However 
because of cross-dependencies, it would be tedious to commit the class 
one-by-one. Is there any objection if I commit them in one big bunch? It 
would be about 150 classes in a single commit...

    Martin