Import from FTY branch: do_convert_deci support in drivers/netxml-ups.c?

[jimklimov]

Follow-up from #2275

Currently the FTY branch includes code for decimal conversions with very old MGE devices. It is mentioned in netxml-ups and mge-xml codebases. I am not sure if it even is not a mis-merge of some earlier resyncs from master to FTY, as some of those commits purported to relocate or drop this... I think.

• dfc1019 (Jim Klimov 2017-02-27 15:16:07 +0100)
• e15aa22 (Jim Klimov 2017-02-27 16:22:10 +0100)
• bc7c4e3 (Jim Klimov 2017-02-28 10:16:06 +0100)
• 957c1cb (Jim Klimov 2024-01-25 10:38:52 +0100) - minor build fix

[jimklimov]

Per analysis in #1316,

actually the FTY part should be dropped, left-over from when the do_convert_deci toggle was converted from boolean setting into a flag checked right in mge-xml.c; will be posted in #2472 resync