exa2pro/starpu-max: porting work to Maxeler DFE @ ab1cd15729db5624d716c26deadd5d51a61c3514

Nathalie Furmento 992aac301e minor fixes		10 lat temu
..
callback.c	6757bca1b5 Remove implementation array terminator in tests, examples, and documentation, since it is not actually used	10 lat temu
prologue.c	992aac301e minor fixes	10 lat temu