Update Pod::Functions with changes from perlfunc.pod

Update Pod::Functions with changes from perlfunc.pod

Updated description of Binary from commit 5dac7880bdc47787 in Feb 2011.
Updated description of Flow from commit cf2649810f00335b in Jul 2005, and
added the "the" which has always been missing from Pod::Function's version.
Updated description of Modules from commit 3b10bc60979cfe9a in Jan 2010.
Updated description of Objects from commit 353c650532037e40 in Oct 2007.
The description of Namespaces had always differed from that in perlfunc.pod.

Remove stray tabs from the descriptions of gets and sprintf.
Commit 19799a22062ef658 (May 1999) added lock to perlfunc.pod without a
it is the only function in "Threads", move it to "Misc", instead of creating
a category just for it.
use always had two entries with different descriptions in the __DATA__
section. This isn't actually sensible, as the code that builds the exported
data structures ends up taking Types from both, and using the last
description that it sees. So merge the two together to reflect this.

Drop the CHANGES section from the Pod, which is both incomplete and
redundant, given that version control does this job much better.

Tweak the golden results in the test to match these changes.