exa2pro/starpu-max: porting work to Maxeler DFE @ 9e9015d718c3816e08bccfa36047d8ecc7b55bbd

Cédric Augonnet c94a373e97 Fix the starpu_sync_data_with_mem API, it is now required to call		16 rokov pred
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ppm-downscaler.c	f33fc377f9 Get rid of the starpu-async branch where all recent changes have been made.	16 rokov pred
ppm-downscaler.h	626b22ba6f introduce a new example "downscaler", no real stuff for the moment	16 rokov pred
yuv-downscaler.c	c94a373e97 Fix the starpu_sync_data_with_mem API, it is now required to call	16 rokov pred
yuv-downscaler.h	846e608648 use StarPU to perform YUV downscaling (CPU only yet)	16 rokov pred