Building the manpages of polkit fails with issues in xsltproc. Since
we are generally not that much interested in documentation, we disable
them. This solves the build issues like
http://autobuild.buildroot.org/results/751b71a594fa04924c7c3bb8f2c460ce1e44aa90/build-end.log.
While we're at it, we also disable the build of the polkit example
programs.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>