Restore AppleTalk manual pages

[rdmark]

Bring back the following man pages, with minor adaption to the format of 3.x man pages:

├── man1
│   ├── aecho.1.xml
│   ├── getzones.1.xml
│   ├── nbp.1.xml
│   └── pap.1.xml
├── man3
│   ├── atalk_aton.3.xml
│   └── nbp_name.3.xml
├── man4
│   └── atalk.4.xml
├── man5
│   ├── atalkd.conf.5.xml
│   └── papd.conf.5.xml
├── man8
│   ├── a2boot.8.xml
│   ├── atalkd.8.xml
│   ├── papd.8.xml
│   ├── papstatus.8.xml
│   └── timelord.8.xml

[rdmark]

Also these aliases:

│       │   │   ├── nbplkup.1.gz -> nbp.1.gz
│       │   │   ├── nbprgstr.1.gz -> nbp.1.gz
│       │   │   ├── nbpunrgstr.1.gz -> nbp.1.gz
│       │   │   ├── papstatus.1.gz -> pap.1.gz

Note: The aliases might be harder to achieve in the same way, since we have done away with the intermediate man pages in man/ and build them directly from xml sources.