Tree import - automatically rename duplicates

[GoogleCodeExporter]

What steps will reproduce the problem?
1.  Import a tree with duplicated node names


It fails to import, throwing an exception. 

It would be convenient to just add a duplicate code to these names and then 
provide a warning at the end.  

Original issue reported on code.google.com by shawnlaffan on 24 Jun 2012 at 11:56

[GoogleCodeExporter]

Original comment by shawnlaffan on 25 Jun 2012 at 1:06

• Changed state: Started
• Added labels: ****
• Removed labels: ****

[GoogleCodeExporter]

This issue was updated by revision r967.

Initial functionality works.  
There is still the risk that the dup name will be elsewhere in the tree.  

Original comment by shawnlaffan on 25 Jun 2012 at 1:07

• Added labels: ****
• Removed labels: ****

[GoogleCodeExporter]

This issue was updated by revision r968.

Clean-up commented code

Original comment by shawnlaffan on 25 Jun 2012 at 1:11

• Added labels: ****
• Removed labels: ****

[GoogleCodeExporter]

Mark as fixed

Original comment by shawnlaffan on 4 Jul 2012 at 10:47

• Changed state: Fixed
• Added labels: ****
• Removed labels: ****