[bugfix] default namespace issue: when constructing an element with an explicit, empty namespace declaration, any existing default namespace declaration in the inherited context needs to be cleared. For example:
[bugfix] default namespace issue: when constructing an element with an explicit, empty namespace declaration, any existing default namespace declaration in the inherited context needs to be cleared. For example:

<div xmlns="http://www.w3.org/1999/xhtml">
    <users xmlns=""/>
</div>

git-svn-id: 1623499149f5af833cfad2814dce82e821210f6f@10485 8784284e-840f-0410-bd5a-a6a6012a0d1a

kingargyle/exist-1.4.x,orbeon/eXist-1.4.x,orbeon/eXist-1.4.x,orbeon/eXist-1.4.x,kingargyle/exist-1.4.x,kingargyle/exist-1.4.x,orbeon/eXist-1.4.x,orbeon/eXist-1.4.x,kingargyle/exist-1.4.x,kingargyle/exist-1.4.x,orbeon/eXist-1.4.x,kingargyle/exist-1.4.x