libbb: disable a second md5 implementation which managed to creep in :)

function                                             old     new   delta
sha512_end                                           239     237      -2
sha256_end                                           162     160      -2
sha1_end                                             191     189      -2
md5_end                                              168     166      -2
__md5__magic                                           4       -      -4
md5_crypt                                            627     621      -6
static.S                                              16       -     -16
__md5_Init                                            42       -     -42
static.P                                              64       -     -64
__md5_Final                                          131       -    -131
__md5_Update                                         153       -    -153
static.C                                             268      12    -256
__md5_Transform                                      293       -    -293
------------------------------------------------------------------------------
(add/remove: 0/7 grow/shrink: 0/6 up/down: 0/-973)           Total: -973 bytes

1 files changed, 2 insertions, 0 deletions

diff --git a/libbb/Kbuild b/libbb/Kbuild
index 786cbee80..b82f03c56 100644
--- a/libbb/Kbuild
+++ b/libbb/Kbuild
@@ -58,6 +58,8 @@ lib-y += make_directory.o
 lib-y += makedev.o
 lib-y += match_fstype.o
 lib-y += md5.o
+# Alternative (disabled) implementation
+#lib-y += md5prime.o
 lib-y += messages.o
 lib-y += mode_string.o
 lib-y += mtab_file.o