opencl: cleanup strings>char*-array and fix cl-queue-read-buffer.
opencl: cleanup strings>char*-array and fix cl-queue-read-buffer.

nicolas-p/factor,AlexIljin/factor,nicolas-p/factor,bpollack/factor,tgunr/factor,mrjbq7/factor,bjourne/factor,nicolas-p/factor,slavapestov/factor,bjourne/factor,nicolas-p/factor,AlexIljin/factor,factor/factor,bjourne/factor,factor/factor,slavapestov/factor,mrjbq7/factor,tgunr/factor,bjourne/factor,tgunr/factor,mrjbq7/factor,slavapestov/factor,mrjbq7/factor,factor/factor,tgunr/factor,bpollack/factor,nicolas-p/factor,bjourne/factor,bjourne/factor,slavapestov/factor,bpollack/factor,mrjbq7/factor,factor/factor,AlexIljin/factor,tgunr/factor,AlexIljin/factor,AlexIljin/factor,bpollack/factor,bpollack/factor,slavapestov/factor,AlexIljin/factor,nicolas-p/factor,slavapestov/factor,tgunr/factor,bjourne/factor,factor/factor,nicolas-p/factor,factor/factor,slavapestov/factor,bpollack/factor,AlexIljin/factor,mrjbq7/factor,bpollack/factor