Add install-dvi Makefile targets.

Closes #102663

ChangeLog:

	PR other/102663
	* Makefile.def: Handle install-dvi target.
	* Makefile.tpl: Likewise.
	* Makefile.in: Regenerate.

c++tools/ChangeLog:

	PR other/102663
	* Makefile.in: Add dummy install-dvi target.

gcc/ChangeLog:

	PR other/102663
	* Makefile.in: Handle dvidir and install-dvi target.
	* configure: Regenerate.
	* configure.ac: Add install-dvi to target_list.

gcc/ada/ChangeLog:

	PR other/102663
	* gcc-interface/Make-lang.in: Allow dvi-formatted
	documentation to be installed.

gcc/c/ChangeLog:

	PR other/102663
	* Make-lang.in: Add dummy c.install-dvi target.

gcc/cp/ChangeLog:

	PR other/102663
	* Make-lang.in: Add dummy c++.install-dvi target.

gcc/d/ChangeLog:

	PR other/102663
	* Make-lang.in: Allow dvi-formatted documentation
	to be installed.

gcc/fortran/ChangeLog:

	PR other/102663
	* Make-lang.in: Allow dvi-formatted documentation
	to be installed.

gcc/lto/ChangeLog:

	PR other/102663
	* Make-lang.in: Add dummy lto.install-dvi tar...