In some cases this will introduce cycles which could likely be cleaned
up by only depending on some unix tools instead of the whole autotools.
Rebuilding doesn't make much sense at this point since it just adds a subset
of base-devel which is still installed by default.
* libxml2: fix the build
See #1917
* libxml2-python: Build with Python 3
* itstool: Build with Python 3
* libxslt: fix the build
See #1917
* libxslt: Drop libxslt-python
* yelp-xsl: Don't depend on libxslt-python
Doesn't look like it is used
* yelp-tools: Don't depend on libxslt-python
Doesn't seem to be used
* rarian: Don't depend on libxslt-python
libxslt seems enough
