Replace de-g0-core.uti with (the contents of) de-g0-bidi-core.uti
Replace de-g0-core.uti with (the contents of) de-g0-bidi-core.uti

This is basically the first step to merge them. I just copied the bidi
table ontop of the g0-core table. Thanks to the latinLowercase table
all the tests involving caps should still work.

I made one small change, namely enable the downgrade emphclass which
wasn't in the bidi table.

liblouis/liblouis,liblouis/liblouis,hammera/liblouis,hammera/liblouis,BueVest/liblouis,hammera/liblouis,BueVest/liblouis,BueVest/liblouis,hammera/liblouis,liblouis/liblouis,liblouis/liblouis,liblouis/liblouis,BueVest/liblouis,BueVest/liblouis,hammera/liblouis,liblouis/liblouis,BueVest/liblouis,hammera/liblouis