src.contrib/PURDUE/v.autocorr

I have a small diff to correct v.autocorr. Brain must have been on vacation.

diff main.c main.c~
198c198
< fprintf (out, "\tHo: spatial autocorrelation is not present\n");
---

      fprintf (out, "\tHo: non-zero spatial autocorrelation is present\n");
                   
--Darrell