Tone down the log message for when we don't need a PT proxy.
Merge remote-tracking branch 'asn/bug5018_notice'
bugfix-on for 5018_notice
Start work on an 0.2.5.3-alpha changelog.

This collects all the changes file, and find the stuff that also
appeared new in 0.2.4.21.
Sort the 0.2.5.3-alpha changelog a little