knotty: Fix output printed to the user at debug log levels

If a user runs with the -v or -D options, its understandable they'd
expect to see log output from the workers yet right now a bug in the
log handling does not show this.

Fix the conditional to ensure such log output is shown on the terminal
when it has been requested. Ideally this data should always flow to
the logfiles but that is for another patch.

This also fixes the code to do what was always intended in the comments,
i.e. if the user specifies -D or -v, output is shown from the tasks,
otherwise notes are suppressed.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
parse: Improve file inheritance logging

The file inheritance logging has been here since the dawn of time. It
duplicates output many times over and logs to debug level 2. When running
with the debug option, its understandable the user may want to see the
paths of files included in the build.

These changes remove pointless/duplicate output and print the
include paths clearly at debug level one in a form which
users should be able to more easily parse.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>