* Makefile.am (tarball): Depend on book1.html, not overview.html.

	* Makefile.am (tarball): Depend on book1.html, not overview.html.
	Don't echo needless messages. Portably copy the source tree to
	dejagnu-${VERSION}.  Portably copy documentation files from the
	source tree to the distribution directory.  Don't copy RPM-related
	files -- leave that to the rpm target.
	(snapshot): Remove target.
	(overview.html): Rename target from this ..
	(book1.htm): .. to this.
	(rpm): Portably copy tar file to SOURCES directory.
	(deb): Depend on book1.html, not overview.html.
	(dist-hook): Depend on book1.html, not overview.html.
	* Makefile.in: Rebuild.
	* doc/Makefile.am (TARGETS): Depend on book1.html.
	(book1.html): Depend on html/book1.html.
	(overview.dvi): Remove target.
	* doc/Makefile.in: Rebuild.