Running derbynetclientmats and derbynetmats requires accessDeclaredMembers permission to be granted with sane=true

About 17 tests fail if this permission is not granted. Permission should not be required to run Derby in embedded or network server mode.

permission java.lang.RuntimePermission "accessDeclaredMembers";

In some (all?) cases it is because getDeclaredConstrunctor or getDeclaredMethod is called when the getPublic versions would suffice.