exa2pro/starpu-max: porting work to Maxeler DFE @ dcfa9853abb2a28ce50e3ee2871acf08d8b5cfc6

Samuel Thibault 2513a83028 Document handle and replicate refcounting		13 gadi atpakaļ
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handle_refcnt	2513a83028 Document handle and replicate refcounting	13 gadi atpakaļ
replicate_refcnt	2513a83028 Document handle and replicate refcounting	13 gadi atpakaļ