socknal + qswnal changes to match
    simplified "will this be forwarded" predicate in ptl_send()

*   fixed bug in multi-instance socknal to pass the correct NI to the tx
    teardown function to allow for the case where the tx hasn't even had a conn
    assigned yet.

*   fixed routerstat stats formatting

*   removed osc::check_elan_limit() and replaced with max_unfragmented_pages()
    which actually works.  NB it depend on the assumption that file and page
    offsets are aligned!

*   fixed lconf to stay away from portals, except to 'modprobe' for it first in
    'load_module()', and to rmmod all the NALs + portals when ptlrpc gets
    unloaded.