system/cups-filters: new package

APKBUILD based on Alpine's aport. Notable changes:
* Add check()
* Disable avahi (python2), mutool and ghostscript (licensing)
* Remove textonly comment and makedepends=bash (removed several versions
  ago)

See merge request !27

docutils and friends

```
Includes:
* user/py3-docutils
  * user/py3-roman
  * user/py3-pillow
    * user/py3-olefile
```

See merge request !17

user/xcape: new package



See merge request !25

Basic python3 testing packages

```
Includes:
* user/py3-tox
  * user/py3-setuptools
  * user/py3-pluggy
  * user/py3-virtualenv
  * user/py3-pytest
    ** user/py3-py

Most of these packages use tox itself for tests, so !check until we have
a copy of tox on the mirrors with which to bootstrap.
```

See merge request !16

user/acpilight: new package



See merge request !24

system/syslinux: fix typo in update-extlinux

See [BTS#54](https://bts.adelielinux.org/show_bug.cgi?id=54)

See merge request !26

Alpine will never merge Pulse support in, so why bother

APKBUILD based on Alpine's aport. Notable changes:
* Add check()
* Disable avahi (python2), mutool and ghostscript (licensing)
* Remove textonly comment and makedepends=bash (removed several versions
  ago)