Commas in PV names

[tynanford]

At ALS we unfortunately have legacy PV names with commas in them and they might not ever go away 😱

It looks like CF doesn't handle commas in the PV name well but also it seems like commas aren't a "correct" character to use in PV names - https://epics.anl.gov/base/R7-0/6-docs/dbCommonRecord.html

So one hacky idea would be to first change all commas in the name query to question marks since that should work for ALS and probably other sites don't have to worry about commas in names