[sheepdog] [ANNOUNCE] sheepdog stable release v0.7.7_rc1

[Hitoshi Mitake]

Hi sheepdog users and developers,

I released v0.7.7_rc1 of stable branch. You can download a source
archive from these URLs:
tar.gz: https://github.com/sheepdog/sheepdog/archive/v0.7.7_rc1.tar.gz
zip: https://github.com/sheepdog/sheepdog/archive/v0.7.7_rc1.zip

The difference between v0.7.7_rc0 and v0.7.7_rc1 is bugfix and logging
enhancement. There are some ongoing bugfixes, but v0.7.7 already has
important updates. So I decided to tag v0.7.7_rc1. If no one disagrees
about this release in 2 days, it will be v0.7.7 officialy.

Below is the summary of the commits:

Hitoshi Mitake (2):
      sheep: use correct error code in rebae_vdi()

Liu Yuan (1):
      sheep: fix vdi clone operation

MORITA Kazutaka (2):
      sheep: save dw->finish_fd to local variable
      read/write data from clients in worker threads

Ryusuke Konishi (1):
      zookeeper: fix build failure in sheep/cluster/zookeeper.c

Yoshinori Matsuo (2):
      add INFO level operation logging on each node.
      sheep: changed end of auto-recovery message to notice

Thanks,
Hitoshi