Fixed build 1.25.1-27 of ru.meefik.busybox
As of 1.25.1-27 the app ru.meefik.busybox uses static builds busybox, so the build process has to build static binaries. Fixes https://github.com/meefik/busybox/issues/21
This fix is not tested, as I'm not able to use fdroidserver.