beremiz

6dcf54a4f5f0
Fix xmlclass not behaving with simple XML element having to attibutes.

xsd:choice can sometime lead to such situation when there is no additional data associated to a particular choice.
<xsd:attribute name="Command" type="xsd:string" use="optional" default="make -C %(buildpath)s all BEREMIZSRC=%(src)s BEREMIZCFLAGS=%(cflags)s MD5=%(md5)s USE_BEREMIZ=1 FROM_BEREMIZ=1"/>