Android: Items in the "Build For Android" screen should be settable in a persistent fashion

[epistax]

The Build For Android dialog has 10 input fields. These fields assume reasonable defaults and they can be changed, but they will not be remembered if I close and re-launch Solar2dTux. "Install After Build?" doesn't even stick from one build to the next. The build.settings file has a versionCode in it, but the Build For Android dialog does not pull this value.

This should all be in a configuration file that is read by the tool. (Bonus points if we can get the Windows release to use and interpret the file the same way).

[DanS2D]

Good call. Thanks for the report and suggestions.

[DanS2D]

The version code part of this (from build.settings) will be included in the next commit.

The other stuff will come after.