[General][testing]Bring derby into harmony test framework

[Tony Wu]

Hi all,

I'm writing implementation of CachedRowSet for harmony, a real db is
required for testing. I purpose to bring derby.jar into harmony as
dependency, and add following lines to depends.properties

+derby.dir=${depends.dir}/derby
+derby.jar=${derby.dir}/derby.jar
+derby.url=http://www.ibiblio.org/maven/org.apache.derby/jars/derby-10.3.1.4.jar
+derby.md5=f28d6047ab26445de53c4c96126494df

I'll move on if no one objects :)

-- 
Tony Wu
China Software Development Lab, IBM