[BusyBox] [PATCH] PATH_MAX undefined in [u]mount.c

[Neal H Walfield]

> I just added 
> 
>     #ifndef PATH_MAX 
>     #define  PATH_MAX         256
>     #endif
> 
> so howpefully that will be the end of that one...  If the system
> one is missing from limits.h (for whatever reason) we will fall
> back on using 256...

I think that this is a hack: we are now hiding problems with badly
configured tool chains and are required to call pathconf() if PATH_MAX
is not defined.