Increment overdue Copyright clause
Support log destinations and syslog facility customization

This supports turning on and off stderr and syslog output modes, and
targeting the syslog output against specific syslog facilities.

Editorialized by Daniel Farina <daniel@heroku.com>.
Add Rodolphe Quiédeville as a contributor
v0.8a1
v0.8b1
Include empty directories in backup tar

Properly create an empty folder if PostgreSQL empties a directory after
the partitioning but before the tar and upload process is complete.
Add Nick Jalbert as a contributor
Wait more for WalTransferGroup greenlets to exit

There is no clear need to kill all running greenlets when a single one
has a problem in "join", so instead wait a while before attempting to
kill the greenlets.
Add Dikang Gu as a contributor
Make test_backup_push_fetch more forgiving to S3 race conditions

It's possible for a read-after-write not to see the new upload
immediately, causing spurious failure.

Spin for a *short* while attempting to make progress rather than
annoying the person running the test.
v0.8b2
v0.8c1
Merge branch 'master' of github.com:wal-e/wal-e