On MacOSX the installable packages (dmg), can use diverse format and
diverse compression method.
Since 10.4 a new format is supported that use bzip2 as a compression
back-end. The result if a reduction of ~30MB of the main dmg.

Null pointer passed as an argument to a 'nonnull'

...otherwise, it might still run during exit(3) and cause problems.

Let's do the iOS specific stuff in separate main() source
file(s). Don't attempt to build complete iOS programs using normal
LibreOffice mechanisms, it will work for only the very lowest level
unit tests anyway, because of static linking and the circularish
UNO/URE/bootstrap/whatnot (run-time) dependencies between different
parts of the code.

We thus can't build the various iOS-specific *_cppunittester_all unit
test executables any more. Corresponding unit tests (and more complex
ones) for iOS will have to be done in a different way.

as opposed to crashing