General - Change FUNC to LINKFUNC where appropriate

[johnb432]

When merged this pull request will:

• Title. I might have missed a few, but I think the PR is big enough as it is.
• Part of effort to break up General - Change CBA Namespaces to HashMap #8801 into smaller PRs.

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[jonpas]

I think this is good to merge for 3.17.0 as well.

I am not sure replacing DFUNC is correct though? @PabstMirror

[PabstMirror]

Should be fine
iirc it may have been done to reduce stack-trace on frequent calls
but I don't think that gets used much and can always be changed if needed when debugging

one thing to watch out for is {call FUNC(x)} handling exitWith differently on some vanilla EHs
but I didn't see anything that would cause problems

[johnb432]

one thing to watch out for is {call FUNC(x)} handling exitWith differently on some vanilla EHs but I didn't see anything that would cause problems

Yea, I specifically omitted any vanilla EH for that reason.