- Split the Python tool & the C sample code.
 - Added an include to the C sample to make it compile with Amiga SAS/C.
 - Fixed/updated the Python script : 
  * Replaced the tobytes() method by tostring() on the palette parsing.
  * Fixed the depth computation to make it work with less than 8 bitplanes images.
  * The .h output file is now encoded in HEX instead of DEC.