* Fixed gtk_doc, docbook, and tools to skip creation of binaries.

* Cleaned up a little.

* Fix circular dependency that leaves gtk_doc to hang.

* Removed docbook_xsl dependency from gtk_doc

* Added libxslt dependency to gtk_doc

* Fixed circular dependencies

* Reverted docbook_xml source sha256sum, firewall threw it off.

* Added libxml2_python dependency to libxslt

* Removed libxml2 and unzip dependencies from packages

* Made sure to use crew variables instead of hardcoded paths.

* added files to docbook package.

* Fixed packages to create the catalog in the postinstall

* Removed exclusions of those packages for binary builds

* Removed some lines from the packages that conflicted with the other package's files.

* Forces to recreate the catalog and the docbook catalog every time package is reinstalled.

* Updated docbook_xsl to track the XML catalog.

* The catalog and docbook files are now tracked in both packages. Fully tested and working.

* Now uses variables for docbook version numbers, removed the warning about binaries.

Fixes @uberhacker's requests.