Description of problem:
JBDS 8.0.0 thrown error and warning when validating "jboss-ejb3.xml" with "<tx:trans-timeout>" tags

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. copy below info into "jboss-ejb3.xml"
<?xml version="1.0"?>
<jboss:ejb-jar
        xmlns:jboss="http://www.jboss.com/xml/ns/javaee"
        xmlns="http://java.sun.com/xml/ns/javaee"
        xmlns:tx="urn:trans-timeout"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.jboss.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-ejb3-2_0.xsd
           http://java.sun.com/xml/ns/javaee http://www.jboss.org/j2ee/schema/jboss-ejb3-spec-2_0.xsd
           urn:trans-timeout http://www.jboss.org/j2ee/schema/trans-timeout-1_0.xsd"
        version="3.1"
        impl-version="2.0">
   <assembly-descriptor>
      <container-transaction>
         <method>
            <ejb-name>DaEnergyMarketBidsBean</ejb-name>
            <method-name>*</method-name>
         </method>
         <tx:trans-timeout>
            <tx:timeout>1800</tx:timeout>
            <tx:unit>Seconds</tx:unit>
         </tx:trans-timeout>
      </container-transaction> 
   </assembly-descriptor> 
</jboss:ejb-jar>


Actual results:
JBDS Problems window:
----------------
Description        Resource             Path       Location               Type

cvc-complex-type.2.4.a: Invalid content was found starting with element 'tx:trans-timeout'. One of '{"http://java.sun.com/xml/ns/javaee":method, "http://java.sun.com/xml/ns/javaee":trans-attribute}' is expected.                jboss-ejb3.xml  /shspoc/sms/src/java/com/isone/sms/bids/ejb               line 18  XML Problem

schema_reference.4: Failed to read schema document 'http://www.jboss.org/j2ee/schema/trans-timeout-1_0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not <xsd:schema>.  jboss-ejb3.xml  /shspoc/sms/src/java/com/isone/sms/bids/ejb               line 18  XML Problem
----------------

Expected results:
No errors.

Additional info:
Please let us know if it is a bug of validation.
If not, please provide a correct sample to us.