file reorg, pathnames.h, paths.h

file reorg, pathnames.h, paths.h

SCCS-vsn: usr.bin/man/Makefile 5.7
SCCS-vsn: usr.bin/apropos/apropos.c 5.8
SCCS-vsn: usr.bin/man/man.c 5.18
SCCS-vsn: usr.bin/whatis/whatis.c 5.3
SCCS-vsn: usr.bin/msgs/Makefile 5.6
SCCS-vsn: usr.bin/msgs/msgs.c 5.4
SCCS-vsn: usr.bin/msgs/pathnames.h 5.2
SCCS-vsn: usr.bin/mt/Makefile 5.2
SCCS-vsn: usr.bin/nice/Makefile 5.3
SCCS-vsn: usr.bin/pagesize/Makefile 5.2
SCCS-vsn: usr.bin/plot/Makefile 4.12
SCCS-vsn: bin/echo/Makefile 5.2
SCCS-vsn: old/refer/Makefile 4.12
SCCS-vsn: old/refer/refer/glue2.c 4.2
SCCS-vsn: old/refer/refer/glue3.c 4.3
SCCS-vsn: old/refer/refer/glue4.c 4.3
SCCS-vsn: old/refer/hunt/hunt8.c 4.4
SCCS-vsn: old/refer/inv/inv1.c 4.3
SCCS-vsn: old/refer/lookbib/lookbib.c 4.6
SCCS-vsn: old/refer/mkey/mkey3.c 4.2
SCCS-vsn: old/refer/refer/refer1.c 4.4
SCCS-vsn: old/refer/refer/refer5.c 4.10
SCCS-vsn: old/refer/sortbib/sortbib.c 4.3
SCCS-vsn: old/refer/NOTUSED/thash.c 4.2
SCCS-vsn: old/refer/hunt/tick.c 4.3
SCCS-vsn: old/refer/NOTUSED/whatabout/what3.c 4.2
SCCS-vsn: old/roff/troff/Makefile 5.3
SCCS-vsn: old/roff/troff/svt6.c 4.2
SCCS-vsn: old/roff/troff/t6.c 4.3
SCCS-vsn: old/roff/nroff/n10.c 4.5
SCCS-vsn: old/roff/nroff_term/Makefile 4.9
SCCS-vsn: old/roff/troff_font/Makefile 5.3
SCCS-vsn: old/roff/Makefile 5.2
SCCS-vsn: usr.bin/rsh/Makefile 5.2
SCCS-vsn: usr.bin/rsh/rsh.c 5.11