Added php-amqp library to talk to RabbitMQ.

You can get this from https://github.com/tnc/php-amqplib
but I updated the demo programs so that they work.

library/php-amqplib/README.md

@@ -0,0 +1,34 @@
+# NOTE #
+
+This library is a fork of the [php-amqplib](http://code.google.com/p/php-amqplib/) library. 
+
+We modified that library in order to work with PHP 5.3 Strict.
+
+Also we improved the debug method to increase performance. 
+
+We use it daily in prod for sending/consuming 600K + messages per day.
+
+Below is the original README file content. Credits goes to the original authors.
+
+# Original README: #
+
+PHP library implementing Advanced Message Queuing Protocol (AMQP).
+
+The library is port of python code of py-amqplib
+http://barryp.org/software/py-amqplib/
+
+It have been tested with RabbitMQ server.
+
+Project home page: http://code.google.com/p/php-amqplib/
+
+For discussion, please join the group:
+
+http://groups.google.com/group/php-amqplib-devel
+
+For bug reports, please use bug tracking system at the project page.
+
+Patched are very welcome!
+
+Author: Vadim Zaliva <lord@crocodile.org>
+
+