Relevant changes:

When using the ** globbing operator, bash will incorrectly add an extra
directory name when the preceding directory name ends with `*' or an empty
string when there is no preceding directory name.

bash40-024 introduced a regression for constructs like **/*.cs; that
expansion would no longer include matching files in the current directory.
This patch undoes portions of bash40-024 and fixes the original problem
in a different way.

There are occasional cursor positioning errors when using readline's
horizontal scroll mode.

bash-4.0 reverted to the historical shell behavior of raising an error
when $@ or $* was expanded after `set -u' had been executed and there
were no positional parameters.  The Posix working group has since
clarified the standard's position on the issue, and $@ and $* are now the
only variables, parameters, or special parameters that do not raise an
error when unset if set -u is enabled.

Fix: Patch attached with submission follows: