add underscores to regression tester widget's filename

[Geoff Keating <geoffk at geoffk dot org>]

Paul Brook asked to not have spaces in the regression tester widget's  
filename.  After some poking around, it appears that you can do this  
while not changing the displayed name of the widget by using Mac OS's  
bundle localization machinery.  (Even the filename displayed in the  
Finder doesn't have underscores!)

So, with some SVN commands, some additional files, and a change to  
the regression tester itself to copy the file from the new pathname,  
we're done!

The .strings files are not really binary, but they are in UTF-16, by  
convention and because some Mac OS versions don't like them to be in  
UTF-8.

I also localised the name into German, badly, because I know there  
are some German users and I hope that they'll think of a better  
translation; and into Japanese, which went very well; the Japanese  
translates to 'measuring device for GCC's degeneration'.

Also, there's a small max-age change to be nicer to caching proxies.

Attachment: regress-widget-underscores.patch
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