(semantic-symref-cleanup-recent-buffers-fcn): 
When cleaning up buffers, don't clean up buffers that are being
used (ie - in a window) when the hook fires.
(cedet-ectag-version-check): return result of the check

result of the cedet-ectag-version-check was always the result of
'called-interactively-p', not the result of actual check...