[eclipselink-dev] Check In: Bug 339458 - Support on Symfoware database

[Tom Ware <tom.ware@xxxxxxxxxx>]

Checked into 2.3

https://bugs.eclipse.org/bugs/show_bug.cgi?id=339458

- Testing changes to accommodate skipping tests and table recreation differences 
on Symfoware
- More index support moved to DatabasePlatform, support added on Symfoware
- Bug fixe for firstResult/maxResultss
- cascade deletes changes for platforms that do not support cascade delete on 
constraints
- some DatabasePlatform API updates

Reviewed by Andrei Ilitchev/Tom Ware -> reviewed user-submitted patch

Testing: JPA LRG has been run on Oracle and MySQL, Core LRG has been run. 
Symfoware testing will be run by contributers