exa2pro/starpu-max: porting work to Maxeler DFE @ bf2c3abd07aa952c1bdc3bad3c168809a883adf8

Samuel Thibault 2f4491e804 Add can_execute member to the codelet structure, so applications can fine-tune implementations usage. Make most schedulers enforce it.		%!s(int64=14) %!d(string=hai) anos
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dot_product.c	2f4491e804 Add can_execute member to the codelet structure, so applications can fine-tune implementations usage. Make most schedulers enforce it.	%!s(int64=14) %!d(string=hai) anos
dot_product_kernels.cu	1f33d0ed4a examples/reductions/dot_product: add a cuda codelet for the reduction	%!s(int64=15) %!d(string=hai) anos
minmax_reduction.c	b3a6c1f52b do not use typedef for starpu_codelet, use it directly as a struct	%!s(int64=14) %!d(string=hai) anos