librcl: Bugfix, calling wait_create_program when waiting for build_program

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
protocol: The client may want to ignore result of kernel analysis

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
rpc: Allow NULL strings

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>
librcl: Propagate merged buffers

Signed-off-by: Pawel Dziepak <pdziepak@quarnos.org>