BusyBox 1.3.0 ar/dpkg is broken

[Kim B. Heino]

Hello,

The new xstrtoul() and xatou() functions broke ar and dpkg commands in 
BusyBox 1.3.0:

dpkg: invalid number '100644  4 <binary garbage removed>

This is because get_header_ar() function is passing the binary header:

         typed->mode = xstrtoul(ar.formatted.mode, 8);
         typed->mtime = xatou(ar.formatted.date);
...
         typed->size = xatoul(ar.formatted.size);

One way to fix this is to add strtoul's endptr parameter to xstrtoul() 
too. Another way is to use some other functions in get_header_ar() to 
parse header.

Any suggestions?