* AUTHORS: Removed authors of xscanimage and xcam (now in
	  sane-frontends).
	* README.unixware2, README.unixware7: X-frontends are no longer
	  included. Removed comments and sourcecode of "rev" (not supported/used
	  in backends/Makefile anymore).
	* sane.lsm: X-frontends are no longer included. Used blanks instead of
	  tabs.
	* doc/scanimage.man: Removed links to backends, added generic link
	  instead.
	* doc/.cvsignore frontend/.cvsignore: X-frontends are no longer included.