[Groff] misleading warning

[Joerg van den Hoff]

a minor issue:

when formatting a document including .PSPIC directives
with -Tlatin1 (i.e. for the terminal) one gets the warning:

macro `PSPIC' not defined (probably missing space after `PS')

while notification that the macro does not exist is OK, the guess that 
this might be due to a missing space after PS is of course not so close 
to the "bull's eye".

1.)
should the text be modified, e.g. to something like

macro `PSPIC' not defined (unsuitable for this device or missing space 
after `PS'?)

2.)
or should PSPIC be silently ignored for devices (at least for -Tlatin1)?

3.)
or should (maybe only a free space the size of) the 'bounding box' be 
drawn as done by gxditview (-X -TX100)?

joerg