t: add greplint.pl and convert grep to test_grep #28338

Job	Run time
config	11s
fuzz smoke test	1m 18s
rust-analysis	1m 38s
win build	5m 2s
sparse	2m 20s
win+Meson build	4m 38s
osx-meson (macos-14)	58m 34s
documentation	7m 13s
osx-reftable (macos-14)	37m 23s
osx-gcc (macos-14)	40m 26s
osx-clang (macos-14)	41m 13s
win+VS build	0s
linux-TEST-vars (ubuntu:20.04)	27m 23s
linux-reftable (ubuntu:rolling)	24m 13s
static-analysis	6m 37s
debian-11 (debian:11)	14m 37s
linux-leaks (ubuntu:rolling)	48m 22s
linux-meson (ubuntu:rolling)	25m 38s
fedora-breaking-changes-meson (fedora:latest)	20m 5s
almalinux-8 (almalinux:8)	23m 3s
linux32 (i386/ubuntu:focal)	6h 0m 3s
linux-reftable-leaks (ubuntu:rolling)	45m 37s
linux-breaking-changes (ubuntu:rolling)	28m 27s
linux-asan-ubsan (ubuntu:rolling)	1h 9m 6s
linux-sha256 (ubuntu:rolling)	25m 38s
linux-musl-meson (alpine:latest)	23m 36s
win+VS test	-1s
win test (3)	11m 58s
win test (2)	30m 37s
win test (6)	13m 53s
win test (0)	11m 13s
win test (4)	6m 3s
win test (8)	4m 57s
win test (9)	6m 51s
win test (5)	11m 29s
win test (1)	7m 26s
win test (7)	6m 42s
win+Meson test (9)	6m 9s
win+Meson test (8)	8m 36s
win+Meson test (6)	14m 0s
win+Meson test (1)	10m 15s
win+Meson test (0)	8m 40s
win+Meson test (5)	8m 51s
win+Meson test (7)	7m 5s
win+Meson test (2)	59m 41s
win+Meson test (4)	8m 5s
win+Meson test (3)	9m 59s
	19h 54m 50s

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