Emailing: EPMService-schema-verify.xsd

Trevor,

    Here is a trial EPM schema (simplified partial) which references and
extends the DSS Verify schema. Check it out and tell me if it is in keeping
with your thinking. I haven't finalized the nillable and minoccurs values as
yet. I wanted to get this out as soon as possible.

Some observations:

- I couldn't reference DSS at the VerifyRequest level because I need to
define my own Options (which is a child) as we discussed. Ref'ed DSS
wherever possible. 

- It would be helpful if RequestID were of type any, so I could use our
TransactionKeyType

- Outputs and Options seem to fit fine, not sure if I like VerifyRequest due
to missing extensibility point

- core schema missing namespace declaration on its import (just has
schemaLocation)

Let me know,
Ed