9P: fixes bug #1125830 and make it possible to mount sub-directory via 9p

This bug makes it possible for 9p to mount a sub-directory of an exported directory.
For example, if "/foo" is exported, you now can mount "/foo/bar".
It fixes bug #1125830 too by returning correct error when trying to mount non-existing
directories or non-accessible directories.
The TATTACH message now works like the MOUNTPROC3_MOUONT RPC Call.

Change-Id: I92594dca93dc8e44dfc2f05f28329014d76df4d5
Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
FSAL_ZFS: make FSAL_ZFS compliant with new config parsing.

Change-Id: I227d7269ce5504a2519d1e2cb8a7fa2f8f79f358
Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
Port to Lustre 2.6, is compatible with Lustre 2.1, 2.4 and 2.5

FSAL_LUSTRE is accessing LUSTRE via the "fid path" way. Every accessed object is associated with a fid (similar to a NFS FH in some ways).
For every object, a special and immutable path can be build to access the object. This path is "<mount point>/.lustre/fids/<object's fid>".
When trying to lookup parent from <mntpoint>/.lustre/fid the standard POSIX API points to <mntpoint>/.lustre/fid, making this special
directory the parent of every object.
To deal with that, FSAL_LUSTRE embeds a very small piece of Lustre kernel code to compute the paren correctly with proper consideration
of the filestsyem trees. The related code is located in src/FSAL/FSAL_LUSTRE/lustre_extended_types.h .
From version 2.4 to 2.6, the required code to embed has change, but with backward compatibilty.
This commits updates the embedded piece of code and makes it compatible with very version of Lustre 2.x from 2.1 to 2.6 .

Change-Id: I8680d27cbf155f6e0c5b3115fb1b276742fb4aed
Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
FSAL_LUSTRE: fixes badly formatted comments in src/FSAL/FSAL_LUSTRE/lustre_extended_types.h . No impact.

Change-Id: Ia0d1c4859a260e4183f25a6b7c7e1fff50dc012d
Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
FSAL_LUSTRE: builds FSAL_SHOOK with name "SHOOK"

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>
RPM: makes rpmbuild aware of libganesha_trace.so for LTTng

Signed-off-by: Philippe DENIEL <philippe.deniel@cea.fr>