TEST :schema collection and schema location : test importing schemas that make a circular reference
http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#Schemas
| Item | Value | 
|---|---|
| title | schG15 - schG15 | 
| name | schG15 | 
| source | ../schG15_a.xsd | 
| schemaName | ../schG15_a.xsd | 
| executeClass | com.sun.jaxb_tck.sigtest.JAXBTest | 
| executeArgs | -TestURL $testURL -Plugin com.sun.jaxb_tck.sigtest.JaxbPlugin -FileName schG15.sig -PackageWithoutSubpackages $package | 
| keywords | schema positive | 
| package | javasoft.sqe.tests.schema.schg15_a | 
| signature | schG15.sig |