[winGRASS] documentation for winGRASS/cygwin port

[Mike Thomas]

Hi Andreas.

| Perhaps it would be wise to use one umbrella term for winGRASS and two
| different names for the X11 version and the "native" version. Any
| recommendations?

There seems to be no neat answer to this question, however I feel
comfortable with the terms "native display winGrass" and "Xserver display
winGrass".

Cheers

Mike Thomas.