macpaint.datatype Version 43.1 (10-Jul-97)

It's a datatype for MacPaint picture format, based on the sources
of Andreas R. Kleinert's samplePNM.datatype. MacPaint pictures are
black & white, 720 * 576 pixels.

Written to replace macpaint.datatype 42.1 from CBM
(Aminet util/dtype/picdt_42_1.lha). I found two bugs in it:

1) The descriptor hook-function didn't recognize all MacPaint pictures,
   but declared a large number of other files as MacPaint pics. The
   new descriptor from Erik Engdahl (Aminet util/dtype/MacPict2_dtc.lha)
   was better, but recognized also Compugraphic fonts as MacPaint.
   My descriptor checks deeper: It tests if the data is packed with
   the PackBits procedure.

2) With SetPatch 43.6 installed, the old macpaint.datatype produces
   completely black pictures (at least on my system). With
   SetPatch 40.16 it worked. My version doesn't have this problem.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  591    1233  47.9% -lh5- beb0 Jul 12  1997 MacPaint_DT.info
[generic]                  407     504  80.8% -lh5- c9d0 Jul  7  1997 MacPaint_DT/MacPaint
[generic]                 2124    3520  60.3% -lh5- 61ed Jul 10  1997 MacPaint_DT/macpaint.datatype
[generic]                 1217    1579  77.1% -lh5- 4dd2 Jul 12  1997 MacPaint_DT/MacPaint.info
[generic]                 1495    3157  47.4% -lh5- 6b71 Jul 12  1997 MacPaint_DT/Readme
[generic]                  218     423  51.5% -lh5- 0058 Jul 12  1997 MacPaint_DT/Readme.info
[generic]                  592    1233  48.0% -lh5- 90c4 Jul 12  1997 MacPaint_DT/Source.info
[generic]                  332     404  82.2% -lh5- 4b70 Jul  8  1997 MacPaint_DT/Source/MacPaintCheck_Hard
[generic]                 1206    2519  47.9% -lh5- fe75 Jul  8  1997 MacPaint_DT/Source/MacPaintCheck_Hard.c
[generic]                 1900    5733  33.1% -lh5- 0b0f Jul 11  1997 MacPaint_DT/Source/Part_of_libfuncs.c
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        10 files   10082   20305  49.7%            Jul 12  1997