pre-commit auto remove trailing whitespace from `.mk` files (#377)

If there are too many changes / files I can create a smaller PR

Thanks

Port the main/test module to gbuild and Ant. Also make it use Google Test instead of cppunit,
and delete the unoexceptionprotector library which was cppunit-specific and completely unused.

Patch by:

Port the main/test module to gbuild and Ant. Also make it use Google Test instead of cppunit,
and delete the unoexceptionprotector library which was cppunit-specific and completely unused.

Patch by: me

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