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Since we don't expect to trace more than one lock type at a time,
having protocol-specific trace points is not required.
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As Glenn pointed out, it is useful for some protocols (e.g.,
k-exclusion protocols) to know the userspace configuration at object
creation time. This patch changes the fdso API to pass the parameter
to the object constructor, which is then in turn passed to the lock
allocater. The return code from the lock allocater is passed to
userspace in return.
This also fixes some null pointer dereferences in the FDSO code found
by the test suite in liblitmus.
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Implement the partitioned FMLP with priority boosting based on the
generic lock API.
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This renders the FMLP and SRP unfunctional until they are ported to
the new locking API.
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Provide a unified userspace interface for plugin-specific locking
protocols.
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