Remove "my" prefix from my{dir,link,file}list
portage.repository.config.RepoConfigLoader.config_string(): Always include DEFAULT section
at the beginning of returned string for better readability.
Revert "Add support for the following attributes in layout.conf to allow more"

This reverts commit 4c409a049c394389b1de398db511380e2fed0437.
This needs to be submitted for review and approval.
Add --output-style option to repoman

This patch adds a --output-style option to repoman, which gives the user
a choice of output formats for the repoman checks. Choices are "default"
(current style) and "column" (a greppable format), but it should be easy
to add more. Fixes bug 481584.

v2: Fix docstring to be complete and in the standard format, make use of
default choices in --output-style wrt comments by antarus and dol-sen
Only use Atoms with package_tracker.match (bug 501360)