land b1_4_smallfix:

land b1_4_smallfix:
- properly handle portals process identifiers in messages (4165)
- finish default directory EA handling (3048)
- removed PTL_MD_KIOV usage under CRAY_PORTALS (4420)
- ignore -ENOENT errors in osc_destroy (3639)
- notify osc create thread that OSC is being cleaned up (4600)
- add nettype argument for llmount in #5d in conf-sanity.sh (3936)
- reconstruct ost_handle() like mds_handle() (4657)
- create a new thread to do import eviction to avoid deadlock (3969)
- let lconf resolve symlinked-to devices (4629)
- don't unlink "objects" from directory with default EA (4554)
- allocate qswnal tx descriptors singly to avoid fragmentation (4504)
- allow more than 32000 subdirectories in a single directory (3244)
- OST returns ENOSPC from object create when no space left (4539)
- limit OSC precreate to 1/2 of value OST considers bogus (4778)
- bind to privileged port in socknal and tcpnal (3689)
- rate limit CERROR/CWARN console message to avoid overload (4519)