Moses server now supports sessions and SOME (but not all) search parameters to be specified with the RPC call.

Supported parameters (meaning corresponding to command line parameters of the same name)

	search-algorithm (for this one, acceptable values are 'normal' / 0 and 'cube' / 1
	stack
	stack-diversity
        beam-threshold
	time-out
	max-phrase-length
	cube-pruning-pop-limit
	cube-pruning-diversity
	cube-pruning-lazy-scoring