QPID-1726 ASF licensed Qpid Store
Add unit tests.

There are several issues with these tests:

1. Originally the four .cpp unit test sources were compiled into a single
unit_test executable. In the current framework those four sources create
conflicting brokers that overwrite each other's store and fail to open port
5672. In this checkin there are four unit test executables. Running each
serially gets them all to pass. A new strategy is needed to start brokers
that don't conflict.

2. The legacystore.so is not integrated with the rest of the tests. Some
tests may run with the externally compiled msgstore.so and some use the
built in test_store. Plugging legacystore.so into these other tests is TBD.

3. cpp/src/tests/legacystore defines more tests beyond simple unit tests.
None of the issues related to wider system tests are addressed yet.



git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1430018 13f79535-47bb-0310-9956-ffa450edef68