libcrypt: shrink crypt() again - unmodularise

libcrypt: shrink crypt() again - unmodularise

modularisation added too much bloat for no benefit, undo.

$ ../busybox/scripts/bloat-o-meter .lib.05/libcrypt-0.9.33-rc1-git.so lib/libcrypt-0.9.33-rc1-git.so
function                                             old     new   delta
crypt                                                130      46     -84
.rodata                                             2704       -   -2704
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/1 up/down: 0/-2788)         Total: -2788 bytes

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>