Ipac driver 2.12 release candidate

[Andrew Johnson <anj@aps.anl.gov>]

A release candidate version of my IPAC (IndustryPack) driver is 
currently available for testing.  This mainly adds a driver for the 
Hytec 8002 and 8004 VME64x carrier boards, and bug-fixes for the 
tyGSOctal module driver and the Xy9660 carrier driver.

More details and documentation at
    https://svn.aps.anl.gov/trac/epics/ipac/wiki/V2.12
which also has a link to the download tar-file.

If anyone can test the new or modified drivers I would appreciate any 
feedback within a week or so (let me know before the end of next week if 
you're still testing it then and I'll delay the final release).

Thanks,

- Andrew
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