realpath issue with native[strict] symlinks

[Jeremy Drake]

On Fri, 28 May 2021, Jeremy Drake wrote:

> On Thu, 27 May 2021, Jeremy Drake wrote:
>
> > > > Treating mapped/subst drives as though they were not symlinks, without
> > > > messing with intermedate symlinks.
> > >
> > > It was that simple, surprise, surprise...
> >
> > It turns out it wasn't, after all.  This only seems to work at the root of
> > a subst-ed drive.  I just got the following error:
>

There was another report of someone running into an issue with this
change, though not exactly the same situation as mine:
https://github.com/msys2/msys2-runtime/issues/41#issuecomment-854913283

It seems that a mapped network drive is being 'dereferenced', confusing
eclipse trying to find source files from debug info from an arm
cross-compiler.

Unfortunately I have not heard back whether or not my patch helps this
case.