build: rectify --link-module usage

[pmq20]

Modules imported by --link-module are not referenced by name but actually by path.

[mscdex]

I'm not sure this was the intended behavior.

@bmeck Thoughts?

[Fishrock123]

ping @bmeck

[bmeck]

The original intent was to have as little magic as possible since the mapping of some things can be complex and not a single name (such as node's internal use of 'internal/*'). I would be more prone to allow mapping a path to a native name rather than always do this. Basically, I want it to have as little magic as possible personally.

That said, there is a use case for mapping paths to different builtin names. Perhaps discussing that prior to merging anything would be for the best.

[Fishrock123]

@bmeck this is just clarifying the configure option to what it actual does in more detail. LGTM if it LGTY.

[bmeck]

@Fishrock123 sounds good. LGTM

[Fishrock123]

Thanks, landed in 753509f

[MylesBorins]

should be considered for LTS

/cc @jasnell

[jasnell]

Can but not sure there's a critical need for it

[jasnell]

Landed in v4.x-staging in ad65c82