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On second thought, I believe mwh is right; most of those
changes are unnecessary.  (I made the changes a long time
ago, so when I grepped for them the other day the memory for
their motivation wasn't fresh).  The Python .c files aren't
fed to moc, so references to 'signals' and 'slots' in the .c
files should compile okay.  It's just the references to
those identifiers in the Python .h files that cause a
problem, if the .h files are #included in a Qt-using C++
program, after #including a Qt header.  So I think probably
just the original three changes are sufficient.