BOOL ntfs_rl_merge (run_list_element * dst, run_list_element * src);
Test if two run lists can be joined together. For this, their VCNs and LCNs must be adjacent. If they can be merged, perform the merge, writing into the destination run list dst.
It is up to the caller to serialize access to the run lists dst and src.
TRUE Success, the run lists have been merged. FALSE Failure, the run lists cannot be merged and have not been modified.