doc: add links to platform specific mechanisms

[mhdawson]

Checklist

• tests and code linting passes
• documentation is changed or added
• the commit message follows commit guidelines

Affected core subsystem(s)

fs

Description of change

As requested in earlier PR adding detail for Aix, add link
for each of the platform specific technologies used for
file system watching.

Note I did not find a good link for "event ports" on Solaris. Hoping @davepacheco might be able to suggest one.

[mhdawson]

@jasnell as requested in previous PR.

[eljefedelrodeodeljefe]

Can you add the links in the footer instead? An example would be https://github.com/nodejs/node/pull/7071/files#diff-acabf706a8aa070a8796e3573f7e4678R1561

Otherwise LGTM

[rvagg]

nice work, lgtm, that apple url tho ..

[mscdex]

@rvagg Too short?

[rvagg]

@mscdex yeah, that, obviously, I was also wondering how stable the named anchors are #//apple_ref/doc/uid/TP40005289-CH1-SW1, perhaps Apple are good with this stuff or perhaps we'll be accepting pull requests soon when they mess with stuff.

[davepacheco]

I'd suggest using http://illumos.org/man/port_create as the link for event ports.

[yorkie]

How about moving these links to the bottom of this documentation to define, that might be readable to maintainers or source reader :-)

[mhdawson]

@eljefedelrodeodeljefe did you get the wrong link for the example ?

[mhdawson]

Figured it out. Good to learn how to put links at the bottom. Pushed update.

[yorkie]

lgtm :-)

[eljefedelrodeodeljefe]

👍

[mhdawson]

landed as 138c7af