Fix search_library_path() on Debian i386

[TheTumultuousUnicornOfDarkness]

Fix #50.

[TheAssassin]

CI fails, please check. debian:experimental is not really a stable target and Gtk+ 4 should have landed in the latest Debian stable, so maybe we can switch to that instead.

[rmartin16]

Thanks for moving ahead with this :) as an FYI, this should also be compatible with Debian for arm64 as well...since while /usr/lib/arm64-linux-gnu won't exist (as the return from dpkg --print-architecture), /usr/lib/aarch64-linux-gnu will (as the return from uname -m). However, I'm pretty sure it would not support armv6 or armv7.....but I think it's just aarch64 that's a potential future goal for this project anyway...not older arm. Thanks again.

[TheTumultuousUnicornOfDarkness]

Thanks for moving ahead with this :) as an FYI, this should also be compatible with Debian for arm64 as well...since while /usr/lib/arm64-linux-gnu won't exist (as the return from dpkg --print-architecture), /usr/lib/aarch64-linux-gnu will (as the return from uname -m). However, I'm pretty sure it would not support armv6 or armv7.....but I think it's just aarch64 that's a potential future goal for this project anyway...not older arm. Thanks again.

In that case, dpkg-architecture -qDEB_HOST_MULTIARCH (command provided by dpkg-dev package) seems to return the appropriate triplet. Improved in e3450bf.