This adds preliminary support for SSL connections to a RabbitMQ
server. Instead of providing two clients (QAmqpClient/QAmqpSslClient),
the SSL support was directly rolled into QAmqpClient itself, providing
signals/slots to deal with errors (sslErrors/ignoreSslErrors), and
the ability to assign a QSslConfiguration. Travis testing for ssl
support is currently disabled, pending a solution to a travis
limitation for starting ssl listeners
This is a very small library, so there is no real pressing need for
a library namespace. Further, the namespacing actually makes it rather
difficult to work with in some cases. Opting for a more "Qt" style
class naming scheme, using the QAmqp class prefix
amqp_<filename> is used in at least two other C/C++ projects related
to amqp, so this commit changes all our source to use a qamqp header.
This avoids potential clashes, and is more in line with Qt style
Matt Broadstone