Add ExtendedCall to PLCObject as a replacement of RemoteExec and reflect it in eRPC interface.
ExtendedCall is a generic remote procedure call that runtime code can register to and that IDE extensions can call.
For example a fieldbus extension can use ExtendedCall to browse the fieldbus devices connected to the runtime.
<xsd:element name="Linux">
<xsd:complexType>
<xsd:attribute name="RealTime" type="xsd:boolean" use="optional" default="false"/>
%(toolchain_gcc)s
</xsd:complexType>
</xsd:element>