[Bug-apl] Print width

[Kacper Gutowski]

Hi,

After lines are neatly wrapped in r109 in SVN, but I think there's some
off by one error; it behaves as if ⎕PW was ⎕PW-1.

      ⎕PW⍴'X'
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
      X

-k