Rewrite of `CInifile` #4613

Job	Run time
Windows Debug x64 (msvc)	7m 31s
Ubuntu Debug amd64 (gcc)	6m 4s
Windows Debug x86 (msvc)	7m 15s
Ubuntu Release amd64 (gcc)	6m 36s
Windows Mixed x64 (msvc)	6m 38s
Ubuntu Debug amd64 (clang)	6m 49s
Windows Mixed x86 (msvc)	6m 30s
Ubuntu Release amd64 (clang)	9m 57s
Windows Release x64 (msvc)	11m 9s
Alpine Debug x86_64 (gcc)	6m 37s
Windows Release x86 (msvc)	10m 26s
Alpine Release x86_64 (gcc)	9m 20s
Windows Release Master Gold x64 (msvc)	10m 0s
Alpine Debug x86 (gcc)	7m 6s
Windows Release Master Gold x86 (msvc)	9m 18s
Alpine Release x86 (gcc)	9m 42s
Fedora Debug x86_64 (gcc)	7m 14s
FreeBSD Debug x86_64	6m 43s
Fedora Release x86_64 (gcc)	8m 3s
FreeBSD Release x86_64	9m 25s
macOS Debug x86_64 (clang)	8m 10s
OpenBSD Debug x86_64	10m 27s
OpenBSD Release x86_64	10m 34s
macOS Release x86_64 (clang)	12m 36s
macOS Debug arm64 (clang)	4m 17s
macOS Release arm64 (clang)	6m 20s
	3h 34m 47s

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