I don't personally see the need for dist-excl-slf4j (is it so terrible to use "ant dist dist-war-excl-slf4j" and ignore the regular war?) but i don't object to it.
I do however object to having "dist-common" be an advertised target – if it's not something we want people to ever run from the command line, it shouldn't show up in "ant -p" (we're trying to make that list smaller, not bigger)
The attached patch fixes this, as well as fixes the other descriptions to be clear that now it excludes everything rleated to SLF4J.
Shawn: if this looks good to you, and if you edit https://wiki.apache.org/solr/SolrLogging with instructions on how to use it, i'll happily commit it.
(and if i forget, or don't notice you added the instructions to the wiki: send me an email every hour until i do)