"Positive/negative" graph meter style #4801

Job	Run time
build-dragonflybsd-latest-gcc	2m 19s
build-freebsd-latest-clang	2m 20s
build-macos-latest-clang	58s
build-netbsd-latest-gcc	3m 20s
build-openbsd-latest-clang	2m 36s
build-solaris-latest-gcc	16m 28s
build-ubuntu-latest-clang-sanitizer	1m 11s
build-ubuntu-latest-clang-analyzer	1m 21s
build-ubuntu-latest-full-featured-gcc	54s
build-ubuntu-latest-full-featured-clang	1m 12s
build-ubuntu-latest-gcc-static	52s
build-ubuntu-latest-minimal-clang	1m 5s
build-ubuntu-latest-minimal-gcc	38s
build-ubuntu-latest-pcp	24s
lint-pcp-config	3s
lint-whitespace	10s
	35m 51s

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