More specfile improvements:
More specfile improvements:

- make atomic-reactor package depend on python3-atomic-reactor when building with py3
- make atomic-reactor binaries link to py3 versions when building with py3

DBuildService/atomic-reactor,fatherlinux/atomic-reactor,fatherlinux/atomic-reactor,fr34k8/atomic-reactor,projectatomic/atomic-reactor,maxamillion/atomic-reactor,david-martin/atomic-reactor,vrutkovs/atomic-reactor,DBuildService/atomic-reactor,david-martin/atomic-reactor,vrutkovs/atomic-reactor,jarodwilson/atomic-reactor,fr34k8/atomic-reactor,mmilata/atomic-reactor,projectatomic/atomic-reactor,jpopelka/atomic-reactor,mmilata/atomic-reactor,jarodwilson/atomic-reactor,jpopelka/atomic-reactor,maxamillion/atomic-reactor