Fold mkpasswd applet into cryptpw.

mkpasswd is in Debian, OTOH cryptpw was added to busybox earlier.
Trying to make both camps happy by making those two applets just aliases.
They are command-line compatible. We can decide whether we want to drop one
(and which one) later.

function                                             old     new   delta
cryptpw_main                                         183     314    +131
static.methods                                        21       -     -21
packed_usage                                       25707   25648     -59
mkpasswd_main                                        307       -    -307
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 1/1 up/down: 131/-387)         Total: -256 bytes

1 files changed, 5 insertions, 11 deletions

diff --git a/loginutils/Config.in b/loginutils/Config.in
index 6efca7edf..ddd0c8015 100644
--- a/loginutils/Config.in
+++ b/loginutils/Config.in
@@ -242,22 +242,16 @@ config CRYPTPW
         bool "cryptpw"
         default n
         help
-          Applet for crypting a string.
+          Encrypts the given password with the crypt(3) libc function
+          using the given salt. Debian has this utility under mkpasswd
+          name. Busybox provides mkpasswd as an alias for cryptpw.
 
 config CHPASSWD
         bool "chpasswd"
         default n
         help
-          chpasswd reads a file of user name and password pairs from
-          standard input and uses this information to update a group of
-          existing users.
-
-config MKPASSWD
-        bool "mkpasswd"
-        default n
-        help
-          mkpasswd encrypts the given password with the crypt(3) libc function
-          using the given salt.
+          Reads a file of user name and password pairs from standard input
+          and uses this information to update a group of existing users.
 
 config SU
         bool "su"