build: Merge sc_main changes into downstream branch #220

Job	Run time
check_vvl	1m 47s
Ubuntu Backcompat	9m 9s
linux (address sanitizer, debug, robinhood ON )	28m 41s
chromium	7m 0s
linux (address sanitizer, release, robinhood ON )	12m 1s
mingw	3m 57s
windows (amd64)	16m 12s
linux (thread sanitizer, debug, robinhood ON )	56m 5s
windows (amd64_x86)	14m 3s
linux (thread sanitizer, release, robinhood ON )	38m 2s
linux (address sanitizer, release, robinhood OFF )	12m 7s
	3h 19m 4s

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