use 128-bit nonces
check for string before calling strlen
implement new XRT (extra round trip) option
XRT library support
winlib: casting fix
add bid_xrt.c
winlib: case-insensitive hostname comparison
winlib: don't return freed value
winlib: left-shift lone hex value
winlib: add host SPN alias option
winlib: lowercase hostname for SPN alias
winlib: ticket cache key regression
allow odd-numbered hex strings
winlib: fix typo in previous commit
include ctype.h for tolower()