t: add greplint.pl and convert grep to test_grep #28406

Job	Run time
config	11s
fuzz smoke test	1m 18s
win+Meson build	4m 59s
win build	5m 11s
static-analysis	6m 31s
rust-analysis	23m 19s
osx-clang (macos-14)	23m 19s
osx-gcc (macos-14)	23m 19s
sparse	3m 57s
documentation	23m 19s
osx-reftable (macos-14)	23m 19s
osx-meson (macos-14)	23m 19s
linux-reftable-leaks (ubuntu:rolling)	23m 19s
linux-asan-ubsan (ubuntu:rolling)	23m 19s
linux32 (i386/ubuntu:focal)	23m 19s
linux-reftable (ubuntu:rolling)	23m 19s
linux-meson (ubuntu:rolling)	23m 19s
linux-musl-meson (alpine:latest)	23m 19s
debian-11 (debian:11)	23m 19s
fedora-breaking-changes-meson (fedora:latest)	23m 19s
linux-leaks (ubuntu:rolling)	23m 19s
almalinux-8 (almalinux:8)	23m 19s
linux-sha256 (ubuntu:rolling)	23m 19s
linux-breaking-changes (ubuntu:rolling)	23m 19s
linux-TEST-vars (ubuntu:20.04)	23m 19s
win+VS build	0s
win+VS test	0s
win+Meson test (3)	11m 6s
win+Meson test (9)	6m 56s
win+Meson test (4)	11m 57s
win+Meson test (0)	9m 38s
win+Meson test (1)	6m 30s
win+Meson test (8)	10m 39s
win+Meson test (5)	8m 41s
win+Meson test (7)	7m 35s
win+Meson test (2)	46m 11s
win+Meson test (6)	12m 28s
win test (3)	29s
win test (1)	28s
win test (8)	23s
win test (7)	21s
win test (4)	25s
win test (9)	23s
win test (0)	22s
win test (2)	28s
win test (6)	28s
win test (5)	23s
	10h 0m 59s

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