updating weld to 2.1.0.Final


**Here is the highlight of what’s new in Weld 2.1.0:**

* OSGi support with Pax CDI
* Improved runtime performance and memory consumption
* Better integration with various Servlet dispatch types
* SLF4j was replaced with jboss-logging
* 30 fixed bugs

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see  http://weld.cdi-spec.org/news/2013/10/22/weld-210-final/