cpstage4 and overlay exclusion improvements

0.4.3

Better feedback and instructions for exstage4

Bugfix and Code Style

0.4.2

Grammar

Fixed help text

Help text had parameters which no longer exist.

Added (primitive) extraction script

Some more fixes including bash shebang.

Fixed compression program quotes

0.3.1

Homogenized quotation marks

mkstage4 enhanced+filtering

Improved filtering options thanks to @lucianposton .

mkstage4 enhanced

Improved version with lots of community contributions.

Stable 1-file Version

Merge pull request #10 from tomslobodnik/master

fix TARGET path handling