JPA Storage Test

[Tom Zeller]

> I still have issues with Postgres passing the strings() test, but I'm
> wondering how MySQL fares.

Well, the strings() test on MySQL fails :

 at org.opensaml.storage.StorageServiceTest.strings(StorageServiceTest.java:90)

but

 at org.opensaml.storage.StorageServiceTest.strings(StorageServiceTest.java:106)

with PostgreSQL.

Otherwise, green lights.