beremiz

C runtime: initial fixes. Now runs and traces first_steps example.

beremiz_runtime -v -t tcp -p 61131 -h localhost
<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>