[ofw] changes needed from trunk for 2.2 release

[Sean Hefty]

Add 2704 to the list, which fixes 2703...  :(

2704 ibat: replace MAXINT64 with value

>2703 ibat/resolve: retry ibat resolution
>2702 libibverbs: release wvprovider reference from ibvwv_acquire_windata
>2701 dapl: locking cleanup and fixes
>
>The following older commits should also be pulled into the 2.2 release:
>
>2689 libibverbs/device: destroy completion channel when closing device
>2688 dapl: use private_data_len for mem copies
>2687 dapl/cma: fix referencing freed address
>2686 librdmacm: set private_data_len
>2685 dapl: move close device after async thread is done using it