Change the Gdraw.ScreenWidthCentimeters to 60 by default. That is about a 24 inch
monitor and makes things more acceptable on a default Linux desktop.

I thought I'd turned off the mac menu icons before? Anyway, force that setting off
by default.

The OSX bundle script has some new tweaks to set things up for mac laptops.
why care what the setting *was*, only what we want to force it into.
Merge pull request #275 from monkeyiq/2013jan/issue-251

Turn off the Mac menu icons by default