Remove STRSAVSYNC dependency on subsystem QSYSWRK

Request:
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Remove the dependency of STRSAVSYNC on subsystem QSYSWRK - it is not the appropriate subsystem to use.

1. Preferred solution: Ship STRSAVSYNC with its own limited subsystem and start it automatically, and also auto start the IPV6 pre-reqs.

2. or leave it all to the user to figure out, but add parameters to the STRSAVSYNC command to let the user specify which subsystem to use.

The STRSAVSYNC runs the following command under the covers:
STRPJ SBS(QSYSWRK) PGM(QSYS/QSRSYNCM)
and therefore requires subsystem QSYSWRK to be active. Problems:

1. If the QSYSWRK is not active, the error message is not sent to the user application, therefore it looks like the STRSAVSYNC command completed normally, but it didn't, and now later user processes crash unexpectedly. Logic to auto start the subsystem does not work because MONMSG does not see the error. This is an IBM design error.

2. QSYSWRK auto starts a lot of jobs that get in the way of save-while-active (SWA) operations. Some vendors also add their stuff to QSYSWRK so when you start the subsystem, now you have to go and end a lot of jobs, and that becomes difficult to automate for unattended operations.

3. The bottom line, QSYSWRK was a poor choice for STRSAVSYNC. All it needs is a simple subsystem with one pre-start job entry, like this:

CRTSBSD SBSD(userlib/somesbsd) POOLS((1 *BASE))

ADDPJE SBSD(userlib/somesbsd) PGM(QSYS/QSRSYNCM) INLJOBS(1) THRESHOLD(1) ALJOBS(0) MAXJOBS(1) JOBD(QGPL/QDFTSVR) CLS(QGPL/QINTER *CALC)

STRSAVSYNC requires limited IPV6 services, therefore you also need to:

STRTCP STRSVR(*NO) STRIFC(*NO) STRPTPPRF(*NO) STRIP6(*YES)

STRTCPIFC INTNETADR('x.x.xx.xxx')