Log Message:
libntlm: update to 1.6.

* Version 1.6 (released 2020-04-19)

** Fix buffer overflow in buildSmbNtlmAuth* function.  CVE-2019-17455.
Reported by Kirin in <https://gitlab.com/jas/libntlm/-/issues/2> and
patch provided by Cedric Buissart.  See newly introduced regression
check test_CVE-2019-17455.c for test of a vulnerable library.

** API and ABI modifications.
No changes since last version.