add LBUG() as future reminder.
b=16197
r=adilger

b=15981
i=adilger
i=robert.read

port Adaptive Timeouts from b1_6 to HEAD.
b=14071
r=nathan
r=adilger

b=14523
i=adilger
i=eric.mei

b=14929
i=zam
i=nikita

b=14576
i=eric.mei
i=adilger

Wrap the crypto api to adapt upstream kernel changes and keep compatible to old style.

support other encrypt/checksum algorithms for bulk i/o, default in gss
mode is sha1/aes128, for others default enable bulk checksum by adler32.
b=13667
r=yong.fan
r=h.huang
r=adilger

- redesigned remote acl support, by FanYong
  b=11842
  r=pravin.shelar, eric.mei
- new sptlrpc configure interface
  b=13642
  r=yong.fan, rahul.deshmukh
- split kerberos keytab for lustre_root
  b=13873
  r=yong.fan, h.huang
- fix setuid for gss with linux keyring
  b=13899
  r=yong.fan, h.huang

land b1_8_gssfix (20070919_1543): various gss fixes (b11841)

land b1_8_keyring (20070919_1155): support linux keyring in lustre gss.

i=ericm
i=vitaly

Fix compile warning and type error message when compiles the HEAD branch.