[ARM] signed zero

[Nick Clifton]

Hi Nathan,

> This patch fixes up things so that, for instance
> ldr r0,[r1,#-0]
> is encoded correctly.
>
> tested on arm-eabi, ok?

Approved - please apply - except...

There are two places where you have code like this:

      {
  	skip_whitespace (q);
  	if (*q == '#') q++;
  	skip_whitespace (q);
  	if (*q == '-')
  	  inst.operands[i].negative = 1;
      }

The first if-statement should have its body indented on a new line:

     {
  	skip_whitespace (q);
  	if (*q == '#')
           q++;
  	skip_whitespace (q);
  	if (*q == '-')
  	  inst.operands[i].negative = 1;
      }

Plus if we are being really picky, the second skip only needs to be 
inside the body of the first if-statement:

     {
  	skip_whitespace (q);
  	if (*q == '#')
           {
             q++;
  	    skip_whitespace (q);
           }
  	if (*q == '-')
  	  inst.operands[i].negative = 1;
      }

Cheers
   Nick