Partial fix for PR automake/40:

	Partial fix for PR automake/40:
	* lisp.am (install-@DIR@LISP): Handle nobase_ case.
	(uninstall-@DIR@LISP): Likewise.
	* header.am (install-@DIR@HEADERS): Handle nobase_ case.
	(uninstall-@DIR@HEADERS): Likewise.
	* data.am (install-@DIR@DATA): Handle nobase_ case.
	(uninstall-@DIR@DATA): Likewise.
	* automake.in (am_primary_prefixes): Recognize `nobase_' prefix.
	(am_install_var): Recognize and handle `nobase_' prefix.