[Lucid] SRU: nfsd4: permit read opens of executable-only files

[Chris J Arges]

SRU Justification

Impact:

NFSv4 mount point does not allow binary files to run when permissions
are set to 111.

Fix:

Upstream commit a043226bc140a2c1dde162246d68a67e5043e6b2.
Applies with minor conflicts (include file is in a different directory).

Testcase:
Mount a directory using nfsv4. Inside that directory place a binary with
---x--x--x permissions. Try to execute the binary. Without this patch it
will not execute.

Notes:
This patch fixes this issue, but requires support from the nfs client as
well. The Lucid version of the client works as expected.

Thanks,
--chris j arges
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