ArangoDB 2.5.3

[Frank Celler]

A new maintenance release 2.5.3 for ArangoDB. It is available from the usual channels.

v2.5.3 (2015-04-29)
-------------------

* issue #1322: strange AQL result

* issue #1318: Inconsistent db._create() syntax

* issue #1315: queries to a collection fail with an empty response if the
  collection contains specific JSON data

* issue #1300: Make arangodump not fail if target directory exists but is empty

* allow specifying higher values than SOMAXCONN for `--server.backlog-size`

  Previously, arangod would not start when a `--server.backlog-size` value was
  specified that was higher than the platform's SOMAXCONN header value.

  Now, arangod will use the user-provided value for `--server.backlog-size` and
  pass it to the listen system call even if the value is higher than SOMAXCONN.
  If the user-provided value is higher than SOMAXCONN, arangod will log a warning
  on startup.