Added "runtime.py", a file that is executed in python thread in runtime, before handling python_eval FBs requests. Added small python editor taken from wxPython demo, and appropriate icon and button to launch it.
<xsd:element name="Xenomai">
<xsd:complexType>
%(toolchain_gcc)s
<xsd:attribute name="xeno_config" type="xsd:string" use="optional" default="/usr/xenomai/"/>
</xsd:complexType>
</xsd:element>