[MINOR] config: detect options not supported due to compilation options

[MINOR] config: detect options not supported due to compilation options

Some options depends on the target architecture or compilation options.
When such an option is used on a compiled version that doesn't support it,
it's probably better to identify it as an unsupported option due to
compilation options instead of an unknown option.

Edit: better check on the empty capability than on the option bits. -Willy