Allow for LISTDEF Processing and Template when specifying FROMCOPYDDN on an UNLOAD

Details:

1) Site has multiple tablespaces that use a consistent naming scheme for image copies.
2) Manual does not mention use of "template-name" in the FROMCOPYDDN line of the "source-spec" section of the "UNLOAD" page.
3) Receive following error when attempting to use a template for FROMCOPYDDN while using LISTDEF processing:
DSNU070I 258 11:42:59.31 DSNUGDFL - KEYWORD OR OPERAND 'FROMCOPYDDN' INVALID WITH 'LIST'

Example proposed syntax:

LISTDEF L1
INCLUDE TABLESPACE DB1.* BASE

TEMPLATE TCOPY
DSN('DSNT.FCP.&DB..&TS.(-2)')
DISP(OLD,KEEP,KEEP)

TEMPLATE TSYSPUN
DSN('DBAT.ECM.#010.UNLDCOPY.&TS..SP(+1)')
UNIT SYSDA GDGLIMIT 1
DISP(NEW,CATLG,DELETE)
MODELDCB DBAP.MODEL

TEMPLATE TSYSREC
DSN('DBAT.ECM.#010.UNLDCOPY.&TS..UL(+1)')
UNIT CART GDGLIMIT 1
DISP(NEW,CATLG,DELETE)
STACK YES
MODELDCB DBAP.MODEL

UNLOAD
LIST L1
FROMCOPYDDN(TCOPY)
PUNCHDDN(TSYSPUN)
UNLDDN(TSYSREC)
FORMAT INTERNAL
SHRLEVEL REFERENCE