Make the inode fileserver backend build again

Make the inode fileserver backend build again

 - Unconditionally build int64_to_flipbase64 and flipbase64_to_int64.
   These are only used by namei, but are referenced by the
   liboafs_util export list

 - Include rx_queue.h in listinodes.c, so the queue elements in
   various structures are defined.

 - Rename vfsck's getline, so we don't conflict with stdio's getline

 - Fix the includes in vfsck/dirutils.c so we get a definition for
   VolumeId

 - salvageserver needs libsys for various ihandle operations

Change-Id: Ibed3439c1eca499e2ada785e1e8186f4480117a4
Reviewed-on: http://gerrit.openafs.org/9966
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@your-file-system.com>