Bring back the GTK file chooser...fixes configure



git-svn-id: http://audacity.googlecode.com/svn/audacity-src/trunk@13470 47890b92-0858-11df-a26f-8b716316a5bc
Record on left, play on right.  Left-to-right flow.

git-svn-id: http://audacity.googlecode.com/svn/audacity-src/trunk@13471 47890b92-0858-11df-a26f-8b716316a5bc