Update wget to 1.11.1.

* Changes in Wget 1.11.1.

** Interrupted downloads no longer result in renaming the file
(regression in 1.11 over 1.10.2).

** Progress bar now displays correctly in non-English locales (and a
related assertion failure was fixed).

** Wget no longer issues a GET request over HTTP for files it should
know it's not going to download (regression in 1.11 over 1.10.2).

** Added option --auth-no-challenge, to support broken pre-1.11
authentication-before-server-challenge, which turns out to still be
useful for some limited cases.

** Documentation of accept/reject lists in the manual's "Types of
Files" section now explains various aspects of their behavior that may
be surprising, and notes that they may change in the future.

** Documentation of --no-parents now explains how a trailing slash, or
lack thereof, in the specified URL, will affect behavior.

(obache)