Add fork-child.o to all *.mh that reference procfs.o.
realloc. Add remapping defines for {yyss, yyssp, yyvs, yyvsp}. * config/{amix.mh, i386v4.mh, ncr3000.mh, stratus.mh, sun4os5.mh}: Add definition for INSTALL using /usr/ucb/install.