Support for `install-dvi', `install-html', `install-ps', and

Support for `install-dvi', `install-html', `install-ps', and
`install-pdf', as recently introduced into the GNU Coding
Standard.

* automake.in (handle_factored_dependencies): Reject
uninstall-dvi-local, uninstall-html-local, uninstall-info-local,
uninstall-ps-local, and uninstall-pdf-local.  Allow
install-info-local even when no-installinfo is not used.
(handle_data): Allow datarootdir, dvidir, htmldir, pdfdir, and psdir.
(%standard_prefix): Declare these new standard directory variables.
* doc/automake.texi (Texinfo, Third-Party Makefiles): Document
install-dvi, install-html, install-pdf, and install-ps.
(Extending): Document install-local-dvi, install-local-html,
install-local-info, install-local-pdf, and install-local-ps.
* lib/Automake/Rule.pm (%dependencies): Add new install rules,
and remove uninstall-info.
* /cvs/automake/automake/lib/am/texinfos.am (install-dvi,
install-dvi-am, install-dvi-recursive, install-html,
install-html-am, install-html-recursive, install-pdf,
install-pdf-am, install-pdf-recursive, install-ps, install-ps-am,
install-ps-recursive, uninstall-dvi-am, uninstall-html-am,
uninstall-pdf-am, uninstall-ps-am): New rules.
(uninstall-info): Delete.
* tests/txinfo21.test: Augment to check for these new rules.
* tests/exdir2.test: Do not use `htmldir' as example of
undefined directory.
* tests/overrid.test: Do not be fooled by install-ps and
install-html.
* tests/txinfo10.test: Do not grep for uninstall-info-recursive.