1001820: fix autocompletion
1004341: add gui completion
1004908: move rhn-setup-gnome requires to -gui subpackage
1004908: Remove unneeded rhn-setup-gnome Requires
Merge pull request #762 from candlepin/alikins/1004908_rhn_setup_gnome_spec

1004908: Remove unneeded rhn-setup-gnome Requires
1004908: Remove the rhn-setup-gnome dep even more.
Merge pull request #763 from candlepin/alikins/1004908_take_2

1004908: Remove the rhn-setup-gnome dep even more.
Merge pull request #756 from candlepin/ckozak/fix_autocomplete

1001820: fix autocompletion
Merge pull request #757 from candlepin/ckozak/subman_gui_completion

1004341: add gui completion
Merge remote branch 'origin/master' into alikins/redhataccount
Refactor credentials gathering.

Additionally, use a more generic term that "System Engine".