Use libdw-based unwinder in ci and packages

Use libdw-based unwinder in ci and packages

* ci/install-dependencies.sh (common_packages): Add pkg-config,
replace libunwind8-dev with libdw-dev.
* debian/control (Build-Depends) [amd64]: Add pkg-config,
replace libunwind-dev with libdw-dev.
* debian/rules (build-udeb/Makefile): Replace --without-libunwind
with --without-stacktrace.
* strace.spec.in (buildrequires_libunwind_devel): Rename
to buildrequires_stacktrace, replace libunwind-devel with
either elfutils-devel or libdw-devel.