Cleanup: Reorder ConfigVar fields so GCC doesn't complain about initialization order.
Merge pull request #177 from Astron/cleanup/compiler-warnings-ConfVar

Cleanup: Reorder ConfigVar fields so GCC doesn't complain about initiali...
Bugfix: Use explicit placeholder to reduce ambiguity with potentially included things like boost.
Merge pull request #178 from Astron/bugfix/vs-ambiguous-placeholder

Bugfix: Use explicit placeholder to reduce ambiguity with potentially in...
Config: Check that a valid database backend exists for a configured backend/type.
Config: Check that a valid client handler exists for a configured client/type.
Config: Check that bind/connect/etc address are valid ipv4 or ipv6 addresses.
Doc: Add DBSS message to query for presence of an object.
Tests: Add unittest for new database message.
DBSS: Implement message to query whether an object is active.
Tests: Fix a few typos in test_dbss.
Tests: Add DBSS test for verifying that GET_ACTIVATED is FALSE after DELETE_RAM.
Merge pull request #179 from Astron/feature/improved-config-checking

Feature: Improved Config Checking
Merge pull request #180 from Astron/feature/dbss-get-metadata

Feature: DBSS message to query for object activation.
Merge branch 'master' into dbserver
Update the protocol to use a reserved channel for db updates.
Tests: Update unittests to expect messages on the reserved channel.
DBServer: Implement changes to send broadcasts on new reserved channel.