contrib/synthrepo: return None to delete files on commit, don't raise IOError The internal commit API was changed in 650b5b6e75ed to expect None from the filectx function when a file is to be deleted, not an IOError. This change keeps synthrepo up-to-date.

wix: contrib/sample.hgrc is no more

dockerrpm: create a yum/dnf repo from the generated rpms This gives "PPA" functionality where users easily can stay uptodate with latest nightly build.

docker: add CentOS 5 There is no official CentOS 5 docker template so we use one from saltstack.

docker: use stable tags for fedora and centos A moving target is rarely useful.

dockerrpm: prepare source outside docker and just run rpmbuild inside docker Simplifies the rpm build process. We will use platform specific rpmbuild directories and will not clean them and will drop the explicit copy to build directory.