group/development: docker-io and libcanberra added
Add variable OS_BIND_CHROOTED to determine if bind-chroot must be installed
(false by default)
Add missing dependency for Quattor development (unit tests)
rpms/editors.pan: add more Xemacs modules by default
document viewers category: add a2ps
Add a few more packages to development-base-tools category
Interactive server category: add mutt (mail client)
Merge pull request #52 from jouvin/el7.x-x86_64

Various package group modifications