Build: Gavotte build 070301_25

Validation fail if schema a.xsd in project A references b.xsd in project B, and
b.xsd references c.xsd in project C.

Steps to reproduce it:

1. Create sample project BluePrint1, SynchronousSample.
2. Create a BPEL Module BpelModule1. Add sample XML Schema
newLoanApplication.xsd to BpelModule1.
3. Add Project References: Project SybchronousSample reference BluePrint1.
BluePrint1 reference BpelModule1.
4. Open Inventory.xsd under BluePrint1.
5. Right-click "Reference Schema", select "Add -> Import" to import
"newLoanApplication.xsd" under BpelModule1. 
6. Right-click "Complex Types", select "Add Complex Type". 
7. In "Complex Type" dialog, check "Use Existing Definition" radio button. In
the tree field, expand "Referenced Schema -> import {http://.../LoanApplication}
-> Complex Types". Select "CarType". Click OK. A new Complex Type
"newComplexType (extends: CarType)" is added.
8. Open "SynchronousSample.xsd" under SynchronousSample project.
9. Right-click "Reference Schema", select "Add -> Import" to import
"Inventory.xsd" under BluePrint1. 
10. Right-click "Element", select "Add Element".
11. In "Element" dialog, check "Use Existing Type" radio button. Expand
"Referenced Schemas -> import {http://.../inventory} -> Complex Types", select
"newComplexType (extends:CarType)". Click OK.
12. Save changes.
13. Validate "SynchronousSample.xsd" file.
==> Will get the following error:
C:/Documents and
Settings/HONG/BluePrint1/BluePrint1/BluePrint1/src/inventory.xsd:42,12
Error: src-resolve: Cannot resolve the name 'ns0:CarType' to a(n) 'type
definition' component.