"Positive/negative" graph meter style #4628

Job	Run time
build-ubuntu-latest-full-featured-clang	1m 5s
build-ubuntu-latest-full-featured-gcc	50s
build-ubuntu-latest-minimal-gcc	38s
build-dragonflybsd-latest-gcc	2m 23s
build-freebsd-latest-clang	1m 59s
build-macos-latest-clang	49s
build-netbsd-latest-gcc	2m 46s
build-openbsd-latest-clang	2m 11s
build-solaris-latest-gcc	5m 42s
build-ubuntu-latest-clang-analyzer	1m 8s
build-ubuntu-latest-minimal-clang	59s
build-ubuntu-latest-gcc-static	52s
build-ubuntu-latest-clang-sanitizer	57s
build-ubuntu-latest-pcp	23s
lint-pcp-config	3s
lint-whitespace	3s
	22m 48s

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