Allow configuring the list of busybox applets (bug #326593)

gen_initramfs.sh

@@ -55,7 +55,7 @@ append_busybox() {
 	chmod +x "${TEMP}/initramfs-busybox-temp/usr/share/udhcpc/default.script"
 
 	# Set up a few default symlinks
-	for i in '[' ash sh mount uname echo cut cat; do
+	for i in ${BUSYBOX_APPLETS:-[ ash sh mount uname echo cut cat}; do
 		rm -f ${TEMP}/initramfs-busybox-temp/bin/$i > /dev/null
 		ln -s busybox ${TEMP}/initramfs-busybox-temp/bin/$i ||
 			gen_die "Busybox error: could not link ${i}!"

genkernel.conf

@@ -154,6 +154,7 @@ BUSYBOX_VER="VERSION_BUSYBOX"
 BUSYBOX_SRCTAR="${DISTDIR}/busybox-${BUSYBOX_VER}.tar.bz2"
 BUSYBOX_DIR="busybox-${BUSYBOX_VER}"
 BUSYBOX_BINCACHE="%%CACHE%%/busybox-${BUSYBOX_VER}-%%ARCH%%.tar.bz2"
+# BUSYBOX_APPLETS="[ ash sh mount uname echo cut cat"
 
 DEVICE_MAPPER_VER="VERSION_DMAP"
 DEVICE_MAPPER_DIR="device-mapper.${DEVICE_MAPPER_VER}"