[PATCH] lib/decompress_unxz.c: removing all memory helper functions

[Joe Perches]

On Thu, 2012-05-24 at 10:03 -0600, T Makphaibulchoke wrote:
> The patch cleans up the file lib/decompress_unxz.c by removing all memory
> helper functions, e.g., memmove.  By doing so, any architecture's preboot
> environment supporting the XZ decompression needs to define its own copy of
> any of the missing memory helper functions.

Perhaps a silly question, but why not use
the __builtin variants?