8014791: More ProblemList.txt updates (5/2013) Reviewed-by: alanb

8013900: More warnings compiling jaxp. Summary: Some internal implementation classes in Jaxp were redefining equals() without redefining hashCode(). This patch adds hashCode() methods that are consistent with equals(). Reviewed-by: chegar, joehw

4487672: (proxy) Proxy constructor should check for null argument Reviewed-by: alanb, lancea