Update wxWidgets.
Refresh catalog manager after deleting a folder.

Not doing so was scary: it looked like some other project's items
disappeared.
Remove another forgotten bit of OS X in automake build.
Use 'make dist' to package sources.

Don't use the homegrown, outdated, broken scripts. This means the
sources tarball is only good for use on Unix, but that's OK, the other
builds require git submodules anyway and are better built directly from
git.

Various related updates to automakes to make it work.
Change version to 1.6, update NEWS.
Fix another welcome screen crash.
Fix LanguageCtrl hints on wxMSW.

The change in 30d1adb broke wxMSW for a change.
Don't fail if Edit menu can't be found.

E.g. when the translations differ, use lookup by position.

Fixes #554.
Provide Retina artwork.

Where necessary (window-close and the Validate toolbar button), redo the
existing one so that the two versions match.
OS X: Fix layout and rendering issues on Retina displays.
Install dump-legacy-tm.exe.
Don't use MMapDirectory on Windows.

Looks like memory-mapped access isn't quite ready for prime time in
Lucene++ yet. Use the old fashioned SimpleFSDirectory.

Hopefully fixes #558.
Fix waiting for dump-legacy-tm termination on Unix.

The SIGCHLD signal would never be delivered in case of error.
Add (more) detailed logging of TM migration process.
Fix misdetection of empty PO files as invalid.
Increase version to 1.6.1, update NEWS.
Update German translation
Add .phtml extension to parsers.

It is used by the Zend Framework for PHP files.
Add --add-comments=translators: xgettext argument.

In addition to TRANSLATORS, use WordPress' translators: by default as well.
Disable logs timestamping.