MANIFEST: Add missing files to generate the tarball

btf_loader.c and the libbpf obtained via the git module are needed to
be able to build from the tarball generated via:

  tar cvfj rpm/SOURCES/dwarves-1.13.tar.bz2 `cat MANIFEST`

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 file changed