Thanks Uri, nice improvement for the release.
About integrating the git instructions: its just something I hacked together but I didn't know the best way to integrate into the regular contributor instructions.
I also don't like that these instructions are duplicated across both the lucene and solr wikis when its only one development project.
I sent an email with this to the developer list, because I think its vital for these instructions to be as simple as possible, but unfortunately there wasn't much interest (http://search-lucene.com/m/sxPSK1hg8BH/refactoring+howtocontribute&subj=refactoring+HowToContribute)
In any case, if you are interested/have ideas, see http://wiki.apache.org/solr/#How_to_edit_this_Wiki
If you sign up and get a user name, just ping back and we can give you write access to the wiki.