[fpc-pascal] Indexing files

[Marco van de Voort]

In our previous episode, Michael Van Canneyt said:
> The inotify calls are available on Linux. It tells you when a file/folder changes:
> 
> function inotify_init: cint;
> function inotify_init1(flags:cint):cint;
> function inotify_add_watch(fd:cint; name:Pchar; mask:cuint32):cint;
> 
> These calls are available in the linux unit. I have an article that describes how it works, if you want.
> There is a similar mechanism on windows, but I haven't had time to look at it yet:
> I wanted to make a unified architecture for this kind of things.

I think Ales was at some point working on having a common kevent +inotify
support unit.  (Kevent is the OSX/BSD variant)