Support SYNC_USER and SYNC_UMASK
safetydance feature
preserve bindist through use expansion
no longer have emerge refer to itself as 'the other white meat'
Portage dynamic SLOT. Ebuilds can now set their own SLOT value. This is useful for custom kernel ebuilds.
add mini-manifest back to SUPPORTED_FEATURES so Portage doesn't complain about mini-manifest when enabled. This is just a convenience tweak; the mini-manifest feature doesn't do anything anymore in this branch.