Test all not_eq for family names.

Any early out checks must give the same answer as FcConfigCompareValue.
An accelerator was added for family names which treated all ops as if
they were FcOpEqual, giving the wrong answer for other non-equivalent ops
(for example FcOpContains or FcOpNotEqual).

This adds a test which passes before the accelerator was introduced,
fails after, and will pass again after !142 lands. This tests the all
not_eq case.
10 jobs for fix_accelerator in 9 minutes and 13 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Build
passed #6366471
gst-macos-10.15
meson macos

00:02:17

passed #6366468
meson-mingw-w64-build

00:04:12

manual #6366472
docker windows 1809 allowed to fail manual
meson msys2
passed #6366466
meson-shared-build

00:04:26

passed #6366467
meson-static-build

00:08:01

passed #6366469
docker windows 1809
meson vs2017 amd64

00:01:26

passed #6366470
docker windows 1809
meson vs2017 x86

00:01:20

passed #6366465
mingw-build

00:06:45

passed #6366463
shared-build

00:09:13

passed #6366464
static-build

00:08:18