bug#1261: [BusyBox] bug#1261: closing ash bugs

[Vladimir N. Oleynik]

I wrote:
 
> I rewrote my last_patch51 to close bugs:
> 1) Ctrl-C/Ctrl-Z problem (my bugs in last patch)
> 2) arith bug - stack overflow (Manuel III bug):
> i=1; echo $(($i+1))
> ash converted to arith(char *expr="1+1")
> l = strlen(expr)=3 stack=l/2 -> 1. But require minimum 2;
> 
> This patch also included all work to close bug #1261
> 

Oops. file attached.


--w
vodz
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