MFC miscellaneous bug fixes (r228042,228192,230522,232531,233473,233904,
235228,239500,241902,242188,243832,243854,244858,245333). This is mostly
documentation fixes and updates to the default FTP list that got left
behind in -CURRENT.
MFC r245680:

Make "Finish" the default choice in the partition editor. This lets you
successfully complete an installation with all defaults by pressing
Enter repeatedly until your machine reboots.
MFC r245700,245701,245702,245706,245707,245758,245759,245760,245792,245796,
245980,246013:

Automated installation support for bsdinstall.
MFC r245742:

Fix typo and simplify condition.

Submitted by:	Christoph Mallon <christoph dot mallon at gmx dot de>
Missed MFC pointed out by:	Garrett Cooper