Bug#881783: libesedb: FTBFS on hurd-i386: PATH_MAX undeclared

[bengen@debian.org (Hilko Bengen)]

* Aaron M. Ucko:

> Builds of libesedb for hurd-i386 (admittedly not a release
> architecture) have been failing:
>
>   libcpath_path.c:487:45: error: 'PATH_MAX' undeclared (first use in this function); did you mean 'INT8_MAX'?
>
> The Hurd famously has no static PATH_MAX.  Best practice is to
> allocate path buffers dynamically based on what you actually
> encounter, but if that's not convenient, you can look up _PC_PATH_MAX
> via pathconf or define a fallback constant (traditionally 4096).

I will accept patches. :-)

Cheers,
-Hilko