[PATCH 1/2] libdwfl: specify optional sysroot to search for shared libraries and binaries

[Frank Ch. Eigler]

Hi -

> [...]  For example, we might be looking at a core file from an ARM
> system using elfutils running on an x86 host. [...]

Makes sense.  By the way, to what extent would debuginfod (serving
files from that sysroot) work for this same use case?

- FChE