* dep-in.sed: Output one filename per line with all lines having

	* dep-in.sed: Output one filename per line with all lines having
	continuation backslash.  Prefix first line with "A", following
	lines with "B".
	* Makefile.am (DEP): Don't use dep.sed here.
	(DEP1): Run $MKDEP on single files, use dep.sed here on dependencies,
	sort and uniq.
	(DEPTC, DEPOBJ, DEP2): Use dep.sed on dependencies, sort and uniq.
	Emit multi dependencies on one line.
	* Makefile.in: Regenerate.