Solr 4.4.0 testing configuration added.
Make travis use solr 4 as well.
Copy to Solr 3 conf to the Solr 4 cfg file.
Add genshi url to find links.
Attempt to fix problem on travis.
Attempt to fix travis failure.
rework query parser according to solr specs

forward slashes are now quoted correctly, and `&&` and `||` boolean operators also work again (essentially reverting b893000c)

please also note that the regex is now using a "raw" string, which allows simpler quoting, in particular for backslahes
adjust tests querying solr directly to properly quote forward slashes
add integration tests to make sure boolean operators work again (see 783e8841)
add tests to demonstrate forward slashes are correctly quoted, including in groups
compare the actual date & time for `DateTime` instances, not their original string representation

this fixes version-dependent test failures related to missing `+0` timezone specifiers
quote forward slashes when building path queries

also quote all other solr reserved characters that are valid in zope ids
clean up buildout configs

now you can use:

  - `buildout.cfg` to set up solr 3.6.x
  - `solr-4.3.x.cfg` to set up solr 4.3.x
  - `solr-4.4.x.cfg` to set up solr 4.4.x
  - `travis.cfg` to run on travis against solr 4.4.x
the Genshi downloads are on `ftp.edgewall.com`
add first working tox configuration

the fixes regarding `buildout:bin-directory` were necessary so the buildout can end up in tox's `{envdir}`
Merge branch 'testing-solr-4'