trunk is trying to access X windows selection in -nw mode

[Giorgos Keramidas]

When running in 'emacs -nw' mode, the latest builds of trunk on my
laptop display an error in the modeline:

    X windows are not in use or not initialized

The first commit that seems to trigger this in the git mirror is:

    user:        Chong Yidong <address@hidden>
    date:        Sun Aug 15 22:33:17 2010 -0400
    summary:     Let all active regions set the primary selection.

I haven't really found why 'emacs -nw' still tries to access X windows
attributes after this commit, but the (error ...) call breaks
macro-recording that uses text selection for non-X11 frames by
triggerring a bell for all selection operations.

Can we please roll back or fix this?