This branch has a new fsi_ipc_ccl.h which is needed by both syren fix 81024977 and 81024730.
It replaces CCL_UPDATE_HANDLE_NFS_STATE with CCL_SAFE_UPDATE_HANDLE_NFS_STATE in
PT FSAL. This branch must go with syren fix 81024977. Changed version back to rev_6, fixed
comments of code.

Signed-off-by: huangz@us.ibm.com <huangz@dd42.(none)>