[BusyBox] duplicate output of symlinks by du?

[Manuel Novoa III]

Erik,

While writing the replacement make_human_readable_str (and fixing two problems
with df and ls), I ran "./busybox du *.c" in my busybox directory and observed
it list the symlink sh.c twice.  This happened with both uClibc and glibc
versions.

Also, you might want to look at the comments at the top of human_readable.c;
especially note 2 regarding the output of "ls -sh".

Manuel