move packages disabled since 3.13 to unmaintained

if nobody fixed build (let alone run) in 6 months, they are de facto
unmaintained.

also move emscripten-fastcomp since it is only used for emscripten
according to APKBUILD comments.

roughly based on this script:

git checkout v3.13.0
grep -l 'arch=""' */*/APKBUILD > 3.13
git checkout master
grep -l 'arch=""' */*/APKBUILD > master
comm -12 3.13 master | cut -d / -f 1-2 | xargs -I{} git mv {} unmaintained/

closes #10402, #10995.
8 jobs for !23041 with disabled-to-unmaintained in 1 minute and 46 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Lint
failed #434321
docker-alpine x86_64 allowed to fail
lint

00:00:23

 
  Build
passed #434326
docker-alpine ci-build aarch64
build-aarch64

00:00:30

passed #434328
docker-alpine ci-build armhf
build-armhf

00:00:30

passed #434327
docker-alpine ci-build armv7
build-armv7

00:00:26

passed #434325
docker-alpine ci-build ppc64le
build-ppc64le

00:00:34

passed #434324
docker-alpine ci-build s390x
build-s390x

00:00:25

passed #434323
docker-alpine ci-build x86
build-x86

00:00:15

passed #434322
docker-alpine ci-build x86_64
build-x86_64

00:00:16

 
Name Stage Failure
failed
lint Lint
No job log