Updating to v0.5.2 in librabbimq-c
0.007000 - 2014-11-03
Major version 0.00700, re-factoring of several key internals.
    - Major re-factoring done to how Perl-to-C type inferences are done
    - Most AMQP header data types from AMQP into Perl should be supported.
    - Upgraded the librabbitmq-c version to the latest stable v0.5.2
    - Nested headers are now working
Adding version v0.5.2 for librabbitmq-c
Ack, now we're on the right version of rabbitmq-c
Incremented version in RabbitMQ.pm