Make it possible for wsdl:import tags to directly import XSD items.

[veewee]

Q	A
Type	bug
BC Break	no
Fixed issues	#19

Summary

Fixes #19

<definitions 
	xmlns="http://schemas.xmlsoap.org/wsdl/" 
	...>
	<import location="AXLSoap.xsd" namespace="http://www.cisco.com/AXL/API/15.0"/>
</definitiions>	

Current behaviour

The flattening process results in:

<definitions 
	xmlns="http://schemas.xmlsoap.org/wsdl/" 
	...>

	XSD CONTENT

        <types/>
</definitiions>	

Expected behaviour

<definitions 
	xmlns="http://schemas.xmlsoap.org/wsdl/" 
	...>
        <types>
         	XSD CONTENT
        </types>
</definitiions>	

This pull requests makes sure to import the full XSD <schema /> in the <types /> element.