Improve preprocessor ouput format #555

Job	Run time
emscripten	2m 13s
Linux Backcompat	18m 29s
linux (clang, clang++, Debug)	9m 40s
android (ON, 23.2.8568313)	7m 34s
linux (clang, clang++, Release)	9m 20s
macos (macos-11, clang, clang++, Debug)	16m 5s
android (ON, 25.2.9519653)	10m 46s
linux (gcc, g++, Debug)	15m 18s
macos (macos-11, clang, clang++, Release)	15m 39s
android (OFF, 23.2.8568313)	7m 50s
linux (gcc, g++, Release)	10m 34s
macos (macos-11, gcc, g++, Debug)	13m 54s
android (OFF, 25.2.9519653)	7m 33s
macos (macos-11, gcc, g++, Release)	16m 49s
windows (windows-2019, windows, Debug)	7m 59s
macos (macos-12, clang, clang++, Debug)	12m 22s
windows (windows-2019, windows, Release)	9m 16s
macos (macos-12, clang, clang++, Release)	14m 4s
macos (macos-12, gcc, g++, Debug)	12m 0s
macos (macos-12, gcc, g++, Release)	13m 30s
	3h 50m 55s

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