Added 'dlopen_prefix' class attributes to targets, in order to handle dlopen of shared object passed to runtime as extra file, and then in PWD (was working with windows only)
<xsd:element name="Xenomai">
<xsd:complexType>
%(toolchain_gcc)s
<xsd:attribute name="XenoConfig" type="xsd:string" use="optional" default="xeno-config"/>
</xsd:complexType>
</xsd:element>