Adding support for defining mandatory parameters and creating blank xml file when there is nothing in the folder in LPCBeremiz
<xsd:attribute name="BuildPath" type="xsd:string" use="optional" default=""/>
<xsd:attribute name="Command" type="xsd:string" use="optional" default="make -C"/>
<xsd:attribute name="Arguments" type="xsd:string" use="optional" default="BEREMIZSRC=%(src)s BEREMIZCFLAGS=%(cflags)s USE_BEREMIZ=1 --quiet"/>
<xsd:attribute name="Rule" type="xsd:string" use="optional" default="all"/>