Fix silent CRR failures for fragmented queries and more

• Ease log permissions
• Adjust loglevels

More misc read repair fixes

Merge pull request #745 from smukil/fix_hdel_repair_script

Replicas shouldn't update top level rem-set on final field delete

Misc read repair bug fixes

Merge pull request #740 from smukil/in_flight_nonrepairable_crash_fix

Turning on repairs shouldn't invoke repairs for in-flight queries

Fix incorrect DC name assignment to rspmgrs under DC_EACH_SAFE_QUORUM

Merge pull request #737 from Netflix/dev

Merge dev into v0.6

Auto cleanup repair Metadata on deletes if all replicas agree

Merge pull request #735 from Netflix/dev

Merge dev into v0.6

Fix issues with DC_EACH_SAFE_QUORUM

Merge pull request #732 from Netflix/dev

Merge dev into v0.6

Support QUIT command, per-connection consistency (hack)

• Support QUIT command
• Unsupported fake Redis command to set per-connection consistency (Avoid in production)
• Misc code cleanup

Fix msg leak with DC_EACH_SAFE_QUORUM

Merge pull request #721 from smukil/fix_msg_leak_for_each_safe_quorum

Fix msg leak with DC_EACH_SAFE_QUORUM

[Beta] Add DC_EACH_SAFE_QUORUM consistency level

Merge pull request #720 from Netflix/dev

[Beta] Add DC_EACH_SAFE_QUORUM consistency level

Misc bug fixes + Zset read repair support

• Add keepalive for dynomite listen connection
• Fix 'args' memory leak
• Fix MSG_PARSE_AGAIN crash w/ repairs
• Fix msg_repair() bug