Patch: tfformat.c doesn't compile under hpux 10.20

[Jeffrey A Law]

  In message < 200009111654.MAA26451@hiauly1.hia.nrc.ca >you write:
  > This patch fixes a problem compiling the test program tfformat.c under
  > hpux 10.20.  The include of stdlib.h has been removed because under hpux
  > it results in the inclusion of stdio.h.  The definitions in stdio.h
  > conflict with those in iostdio.h.
  > 
  > The header stdlib.h was included for `exit'.  The single use of exit in
  > the program has been changed to a return.  Tested under hpux and i686
  > linux.
I must have missed the original thread.  What definitions conflict and is
it possible to fix the conflict?

jeff