Reduce BINARY_SIZE for OpenCL formats that was transferring partial binaries
anyway.
OpenCL: Only replace whitespace with '_' in device name part, not path.
Merge branch 'unstable-jumbo' into bleeding-jumbo

* unstable-jumbo:
  OpenCL: Only replace whitespace with '_' in device name part, not path.
  Reduce BINARY_SIZE for OpenCL formats that was transferring partial binaries anyway.