added 2011 year to the copyright line
added authors info to the license
added UofM license to libtirpc files that we modified
(but i probably missed some)
recovery.h exposes the following functions for nfs41_compound.c:
nfs41_recovery_start_or_wait()
nfs41_recovery_finish()
nfs41_recover_client_state()
nfs41_recover_stateid()
Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>