PATCH FOR PROJECTION PIXEL -> COORDINATES (for s/w version 105108)
==================================================================
Note 05/01/99:
  Follow the instructions below, but replace the file 
   
     src/cdi/cdi_stability.c

  from the tar file with the version made available on
  05/01/2000.


Note by Jaap Schuurmans and Hans Muller SRON (07-09/99):

  The original routine to transform pixelpositions to celestial coordinates
  as used by the sax-wfc stage2 software, performs badly for pointings 
  in the neighbourhood of the poles.
  
  The error has been located - even the error in the patch ! - and a 
  new set of patches is available for the following files 
  (paths under WFC software root directory):

     include/util.h
     src/cdi/cdi_stability.c (obsolete patch !!, 2 september 1999)
     src/iros/iros.c
     src/iros/iros_loop.c
     src/util/Makefile
     src/util/jz_shiftPointing.c
  
   now unzip the file, load the files and remake UTIL, cdi and iros,
   as follows:

 1. Get the patch tar file "pointing_020999.tar" (see below) and 
    put it in your WFC software root directory   

 2. Save old versions of the files mentioned above

 3.   gunzip pointing_020999.tar.gz

 4.   tar xvf pointing_020999.tar

    The patches will be put automatically in the right directories.

 5. Make the patch with your main WFC Software root directory:

      make UTIL cdi iros

 Done