Pull up following revision(s) (requested by snj in ticket #1931):
	share/man/man7/release.7: revision 1.32
	distrib/common/Makefile.bootcd: revision 1.18
	distrib/notes/macppc/prep.OPENFIRMWARE: revision 1.15
	distrib/notes/sparc/install: revision 1.57
	etc/Makefile: revision 1.394
	distrib/notes/common/main: revision 1.484
PR# install/44593: Please give release ISO's more meaningful names
Change release ISO filenames, what was once 'i386cd.iso' will now look
like 'NetBSD-5.99.60-i386.iso'.
ok snj@
Ticket 1931.