[eclipselink-dev] Fix for bug 345495 checked in

[David Minsky <david.minsky@xxxxxxxxxx>]

Bug 345495 - Replacing IndirectContainer's ValueHolder can lead to a NullPointerException
https://bugs.eclipse.org/bugs/show_bug.cgi?id=345495

Updates to IndirectMap and IndirectSet buildDelegate to perform a null check
and return a default value if the IndirectContainer ValueHolder's value (delegate)
is null.

- Added NullDelegateInValueHolderTest to TransparentIndirectionModel
- Removed un-needed "prototype" IndirectSet from transparent indirection test model, and changed imports to reference the proper EL IndirectSet

Reviewed: Gordon
Testing: LRG & JPA LRG (Oracle & MySQL) - 100%

Checked into trunk (2.3) at revision: 9370 

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David Minsky | Senior Member of Technical Staff
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Oracle Oracle Server Technologies Sustaining Engineering
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