exit gracefully for 32-bit hosts (issue #336)

* presents modal dialog warning for 32-bit hosts then exits
* added translation reference to lib/messagebundles/default.po

NOTE:
there are many diffs that are whitespace only - my editor automatically trims trailing whitespaces

not sure about these imports here...
we do a lot of reflection during startup to make startup faster.

perhaps the architecture check can be done right when we do the first native library `System.load()`