Improve statusbar font size selection logic

This is largely to solve the problem of the text being tiny on OS X, but it also makes the algorithm simpler and more robust, removes some
strange edge cases, and uses the user's chosen size if it's within the acceptable range rather than needlessly modifying it.
Enable temporary toggling of menu bar using Alt

If the menu bar is not permanently visible, allow it to be shown temporarily by pressing the Alt key, as is normal on Linux and Windows.
Improve error handling on corrupt raster texture cache.
Reduce maximum overzoom fog factor to "just barely visible"
Add wx2.8-i18n default wxWidgets translation package to Debian package dependencies. (FS#1559)
Merge pull request #190 from CaesarSchinas/statusbar

Improve statusbar font size selection logic
Merge pull request #191 from CaesarSchinas/menus

Enable temporary toggling of menu bar using Alt
Improve out-of-memory exception handling in OpenGL texture creation.
Replace CrashRpt dll for PDB matchup.
3.3.2316
Merge remote-tracking branch 'upstream/master' into overzoom