For 1.9.3

Hi ronnie,

as discussed here is the pull request without the compiler warning and the version bump stuff.
patches are identical except for a rearrangement of the if cases in nfs_pread_mcb.

I ran some basic tests with qemu-img. to fake short reads I trimmed res->READ3res_u.resok.count randomly and checked the results as well as possible memory leaks with valgrind.

Peter