Several identical classes are duplicated in both common and api modules.

"mvn install" still works, but the (some) IDEs have problems building Infinispan.

This patch[1] removes them from the commons module, as this one already depends on the api module.

The classes are:

-AdvancedExternalizer

-Marshaller

-Externalizer

Cheers,

Mircea

[1] https://github.com/infinispan/infinispan/pull/631