build: consistently indent preprocessor directives
build: consistently indent preprocessor directives

* global: patch created by running:
for f in $(git ls-files '*.[ch]') ; do
    cppi $f > $f.t && mv $f.t $f
done

cardoe/libvirt-python,libvirt/libvirt-python,cardoe/libvirt-python,cardoe/libvirt-python,libvirt/libvirt-python,libvirt/libvirt-python