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Replace preprocessor in wrapper generator #458

Job	Run time
windows (win64_mingw73, 3.10, 5.12.*, x64)	5m 47s
oldschool (rockylinux, 9, debug)	4m 8s
macOS (latest, 3.9, 5.9.*, release)	5m 33s
windows (win64_msvc2017_64, 3.6, x64, 5.11.*)	5m 4s
oldschool (rockylinux, 9, release)	4m 56s
ubuntu (20.04)	8m 13s
macOS (latest, 3.9, 5.9.*, debug)	7m 8s
windows (win64_msvc2019_64, 3.13, x64, 5.15.*, PythonQtCore PythonQtGui PythonQtMultimedia)	4m 26s
ubuntu (22.04)	7m 3s
macOS (latest, 3.11, 5.12.*, debug)	3m 11s
windows (win32_mingw53, 3.6, x86, 5.11.*)	6m 41s
	1h 2m 10s

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