Change semantics slightly.
Now we have debug level:
-1 -> 'emerge -q' 0 -> 'emerge ' 1 -> 'emerge -v' 2 -> 'emerge -vv' 3 -> 'emerge -vvv'
Changes;
- Now outputting generally useful info at debug level 0 already
- Currently handled package
- Current action (fetch, compile, qmerge, etc.)
- Package result (success, failed)