Makefile: cleanup: replace clunky ifndefs, set SHELL to bash
Makefile: cleanup: replace clunky ifndefs, set SHELL to bash

Signed-off-by: Dan Mick <b07550071eaa6a9296289c43bbd6c90559196431@inktank.com>

ceph/romana,SUSE/romana,ceph/calamari-clients,SUSE/calamari-clients,ceph/calamari-clients,SUSE/calamari-clients,ceph/romana,SUSE/romana,SUSE/romana,ceph/calamari-clients,GregMeno/test,ceph/romana,GregMeno/test,SUSE/romana,ceph/romana,SUSE/calamari-clients,SUSE/calamari-clients,ceph/calamari-clients,ceph/romana,GregMeno/test,ceph/calamari-clients,SUSE/calamari-clients,SUSE/romana,GregMeno/test,GregMeno/test