Update ChangeLog and bump version for v3.1 release

Signed-off-by: Joachim Nilsson <[email protected]>

Update ChangeLog and bump version for v3.0.2 release

Signed-off-by: Joachim Nilsson <[email protected]>

Update ChangeLog and bump version for v3.0.1 release

Signed-off-by: Joachim Nilsson <[email protected]>

Update ChangeLog and bump version for v3.0 release

Signed-off-by: Joachim Nilsson <[email protected]>

Initial import of mg from OpenBSD 5.9

Signed-off-by: Joachim Nilsson <[email protected]>