Merge "libbinder_ndk: clarify AParcel_writeStatusHeader"

/**

 * Writes an AStatus object to the next location in a non-null parcel.

 *

 * If the status is considered to be a low-level status and has no additional information other

 * than a binder_status_t (for instance, if it is created with AStatus_fromStatus), then that

 * status will be returned from this method and nothing will be written to the parcel. If either

 * this happens or if writing the status object itself fails, the return value from this function

 * should be propagated to the client, and AParcel_readStatusHeader shouldn't be called.

 */

binder_status_t AParcel_writeStatusHeader(AParcel* parcel, const AStatus* status);