special characters in mom example

[Bernd Warken]

In `make'ing the current groff, the following error arises:

make[2]: Entering directory `/usr/local/src/groff/contrib/mom'
test -d examples || /src/groff/mkinstalldirs examples
test -f penguin.ps || cp /src/groff/contrib/mom/examples/penguin.ps .
GROFF_BIN_PATH=`echo /src/groff/src/roff/groff /src/groff/src/roff/troff 
/src/groff/src/devices/grops | sed -e 's| \+|:|g'`; export GROFF_BIN_PATH; 
/src/groff/src/roff/groff/groff -F/src/groff/font -M/src/groff/contrib/mom -Tps 
-mom examples/macros.mom >examples/macros.ps
examples/macros.mom:28: warning: can't find special character `ru'
examples/macros.mom:72: warning: can't find character with input code 252
examples/macros.mom:77: warning: can't find character with input code 226
examples/macros.mom:80: warning: can't find character with input code 233
examples/macros.mom:80: warning: can't find character with input code 244
examples/macros.mom:106: warning: can't find character with input code 232
examples/macros.mom:115: warning: can't find character with input code 251
examples/macros.mom:119: warning: can't find character with input code 224
examples/macros.mom:119: warning: can't find character with input code 234
examples/macros.mom:603: warning: `PSPIC' not defined (probable missing space 
after `PS')
examples/macros.mom:635: warning [p 3, 10.1i]: cannot adjust line


These are only warnings, but they hint to some trouble with special
characters.

Bernd Warken