pNFS/LUSTRE: glue done in-between FSAL loader and configuration file for pNFS information related to FSAL_LUSTRE
pNFS/LUSTRE: this version has a cleaner way of dealing with parameters
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pNFS/LUSTRE: invalidate attrs on close (force DS/MDS coherency). Think about something more subtle.
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pNFS/LUSTRE: code cleaning
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SQUASH ME : missing warg