2 Locations and Common Build Practices

[WebDawg <we...@gmail.com>]

Can someone tell me why there are two locations for  nutch on the
apache servers?

http://archive.apache.org/dist/lucene/nutch/
http://archive.apache.org/dist/nutch/

Is it because the project split off some time ago?  Or are these
recommended builds to use with solr?

Also,

Does anyone know when making a package for a Linux distro if it is
common practice (with java applications) to pull the pre compiled
stuff from the server or the source and compile with apache-ant?

I am sorry for my ignorance, I do not know Java stuff well enough.

Are there any build scripts/patches that I should be looking at?   I
know in the past I was having issues matching pre compiled objects
included in other releases of other projects...but there could be a
few different reasons why for this.

Also, are there any cool optimizations that are included in the pre
compiled releases that I would miss?

Thanks!