python-dbus: use PACKAGECONFIG for doc generation

Adds 'docs' (for html doc generation) and 'api-docs' (for API doc generation)
configurations and leaves them both disabled by default. This avoids
autodetected dependency upon docutils.

Fixes [YOCTO #6530]

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
oe.package_manager: fix use of PACKAGE_EXCLUDE for dpkg

It was iterating over the variable character-by-character rather than
word-by-word.

Signed-off-by: Christopher Larson <chris_larson@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
SIGGEN_EXCLUDERECIPES_ABISAFE: add initscripts

* update-rc.d now adds initscripts dependency even to allarch recipes
  making them effectively TUNE_PKGARCH, "fix" it by excluding
  initscripts from all signatures

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>