Log Message:
net/rabbitmq-c: Update to 0.9.0.

Added:
- amqp-publish: added support for specifying headers via the -H flag
- Add support for specifying timeout for amqp_login calls via
  amqp_set_handshake_timeout
- Add support for specifying timeouts in RPC-style AMQP methods via
  amqp_set_rpc_timeout
- Add define for AMQP_DEFAULT_VHOST
- Support for SSL SNI
- Support for OpenSSL v1.1.0

Changed:
- rabbitmq-c now requires Windows Vista or better
- rabbitmq-c enables TCP keep-alive by default on platforms that
  support it
- dropped support for compiling rabbitmq-c without threading support
- OpenSSL is no longer un-intialized automatically by default. OpenSSL
  can be
  explicitly initialized by calling amqp_initialize_ssl_library and
  uninitialized by calling amqp_uninitialize_ssl_library.

Fixed:
- Correct bugs in processing of --url flag in tools
- Improve documentation on AMQP_SASL_METHOD_EXTERNAL
- Improve support for compiling under mingw-w64
- Better support for handing SIGPIPE on Linux over SSL
- Improve publish performance on Linux by not specifying MSG_MORE on
  last part of message.
- Fix connection logic where multiple hostnames won't be tried if
  connection to doesn't fail immediately

Removed:
- autotools build system has been removed
- many duplicate amqps_* examples, they did not add a lot of value