use the latest xerces to replace the jaxp-ri-1.4.4 to resolve cocurrent issue
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Key: SMX4-799
URL: https://issues.apache.org/jira/browse/SMX4-799
Project: ServiceMix 4
Issue Type: Improvement
Reporter: Freeman Fang
Assignee: Freeman Fang
In jaxp-ri-1.4.4,
com.sun.org.apache.xerces.internal.impl.dv.DTDDVFactory.getInstance() is
synchronized, this could cause performance issue when a lot of thread access
this method at the same time.
Per the post[1], this issue already get resolved after xerces-2.9.1, we need
ship latest xerces but not the buggy jaxp-ri.
[1]http://old.nabble.com/Re%3A-DTDDVFactory-td28314363.html
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