New directory structure.

New directory structure.

SCCS-vsn: usr.bin/tn3270/ctlr/api.c 1.14
SCCS-vsn: usr.bin/tn3270/ctlr/inbound.c 1.17
SCCS-vsn: usr.bin/tn3270/ctlr/makefile 1.15
SCCS-vsn: usr.bin/tn3270/ctlr/outbound.c 1.21
SCCS-vsn: usr.bin/tn3270/sys_curses/makefile 1.10
SCCS-vsn: usr.bin/tn3270/sys_curses/termout.c 1.20
SCCS-vsn: usr.bin/tn3270/sys_curses/system.c 1.13
SCCS-vsn: usr.bin/tn3270/distribution/sys_dos/makefile 1.10
SCCS-vsn: usr.bin/tn3270/distribution/sys_dos/system.c 1.4
SCCS-vsn: usr.bin/tn3270/tools/mkdctype/mkdctype.c 1.4
SCCS-vsn: usr.bin/tn3270/tools/prt3270.c 1.7
SCCS-vsn: usr.bin/tn3270/tools/mkhits/dohits.c 1.9
SCCS-vsn: usr.bin/tn3270/tools/mkdstoas/mkdstoas.c 1.7
SCCS-vsn: usr.bin/tn3270/tools/makefile 1.14
SCCS-vsn: usr.bin/tn3270/tools/mkastods/mkastods.c 1.3
SCCS-vsn: usr.bin/tn3270/distribution/utilities/tnrecv.c 1.8
SCCS-vsn: usr.bin/tn3270/distribution/utilities/makefile 1.5