[eclipselink-dev] checked in patch for bug 280350

[christopher delahunt <christopher.delahunt@xxxxxxxxxx>]

fix for bug 280350 - "JPA2.0: NoSuchFieldException on deploy when using 
parent's compound  PK class as derived ID"
Changes:  CMP3Policy initializePrimaryKeyFields will now use the 
reference descriptor's primary key accessors if its key class is the 
same as the reference key class
Reviewed by Tom Ware and Guy Pelletier
Checked into main (2.0)

https://bugs.eclipse.org/bugs/show_bug.cgi?id=280350