"Positive/negative" graph meter style #4646

Job	Run time
build-dragonflybsd-latest-gcc	2m 21s
build-freebsd-latest-clang	2m 4s
build-macos-latest-clang	46s
build-netbsd-latest-gcc	2m 50s
build-openbsd-latest-clang	2m 30s
build-solaris-latest-gcc	6m 43s
build-ubuntu-latest-clang-analyzer	1m 16s
build-ubuntu-latest-clang-sanitizer	1m 2s
build-ubuntu-latest-full-featured-clang	1m 48s
build-ubuntu-latest-full-featured-gcc	1m 5s
build-ubuntu-latest-gcc-static	51s
build-ubuntu-latest-minimal-clang	1m 5s
build-ubuntu-latest-minimal-gcc	37s
build-ubuntu-latest-pcp	27s
lint-pcp-config	2s
lint-whitespace	3s
	25m 30s

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