Issue 59: proposal

[Anish Karmarkar <Anish.Karmarkar@oracle.com>]

Here is a proposal to resolve issue 59 (modeled after the assembly spec 
section 12):

In section 5.2.2 (SCA Extended WS-BPEL Runtime) add the following bullets:

3. An implementation MUST raise an error for every situation where the 
configuration of the SCA BPEL extensions defined in this specification 
are in error. [SBPELXXXX]
The error is either raised at deployment time or at runtime, depending 
on the nature of the error and the design of the SCA Extendd WS-BPEL 
Runtime.

4. An implementation SHOULD detect errors in SCA WS-BPEL Documents at 
deployment time when those errors can be found through static 
analysis.[SBPELYYYY]

-Anish
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