* src/devices/grotty/grotty.man: Add cp1047 device.

* src/devices/grotty/grotty.man: Add cp1047 device.
* src/preproc/eqn/eqn.man, src/preproc/eqn/neqn.sh, tmac/eqnrc:
Ditto.
* src/roff/groff/groff.man: Ditto.
* src/roff/nroff/nroff.sh, src/roff/nroff/nroff.man: Ditto.
* doc/groff.texinfo: Ditto.

* tmac/troffrc: Fix mapping of latin-1 char 160 (non-breakable space)
for cp1047.

* man/groff_char.man: Add `pc' glyph.
* tmac/tmac.latin1: Replacing `md' glyph with `pc'.
* tmac/tmac.tty: Add `pc' glyph.
* tmac/tmac.tty-char: Use/add `pc' glyph.  Don't call tmac.latin1 if
we use cp1047 output device.

* Makefile.in, aclocal.m4: Don't build utf8 on EBCDIC hosts since
there are still hardcoded latin1->unicode values in utf8's font
definition files.
* configure: Updated.
* NEWS: Minor clarification.  Updated.

* PROBLEMS: Formatted.  Added info about C++ fix pack for OS/390
Unix.