compile-error on ARM platform with GMP 5.0.5

[Torbjorn Granlund]

<andreas.luettgens at zf.com> writes:

  i had to change  gmp-5.0.5/mpn/arm/invert_limb.asm
  in one line to make it compileable on my iPhone 3G (ARM).
  
  please see the difference in a single line in attached change.txt
  
  after the change configure, make, make check worked without any problems.
  
Removing the section name might work around some Apple problems, but it
is really invalid syntax.

The patch is not acceptable in its current state.

-- 
Torbjörn