less questions

When we replace alpine_dev we should not remove the :<filesystem>

- encapsulate the alternatives in ''
- strip whitespacee from alternatives and separate with ,
- fix prompt

we encapsulate 'none' within '' everywhere else

ref #786

use 2 * total ram or maximum 1/4 of the smallest disk.
don't use more than 4G swap
if swap is smaller than 64MB then don't bother create swap at all.

ref #732

It was broken.

This reverts:
	70b1a671
	a234ec98
	c67ff255
	0b3ae89a

The -k option is to not use UUID

This allows users to do lbu commit into a dir without trying to mount
anything.

we try to avoid huge if ... else clauses. Put thing in function
this is only to improve readability of code

It might take a few seconds to start the networking so we can do that
while user enter info about timezone and enters the password.

This reduces the waiting time.

A tool to setup the apk cache. This and setup-lbu replaces the
setup-apklbu tool.

If the codepage option is there mount will fail.

This is to replace setup-apklbu in the long run.

Cope with empty lines in include/exclude without editing the file
ref #713