contrib: gmp: fix build failure with recent binutils

contrib/src/gmp/arm.diff

+--- gmp/mpn/arm/udiv.asm.orig	2013-08-11 17:38:14.542690389 +0200
++++ gmp/mpn/arm/udiv.asm	2013-08-11 17:38:18.078690240 +0200
+@@ -50,7 +50,7 @@
+ 	teq	r12, #0
+ 	bne	L(oop)
+ 
+-	str	n1, [ rem_ptr ]		C store remainder
++	str	n1, [rem_ptr]		C store remainder
+ 	adc	r0, n0, n0		C quotient: add last carry from divstep
+ 	mov	pc, lr
+ 
+@@ -89,7 +89,7 @@
+ 	addcs	n0, n0, #1		C adjust quotient
+ 
+ L(_even_divisor):
+-	str	n1, [ rem_ptr ]		C store remainder
++	str	n1, [rem_ptr]		C store remainder
+ 	mov	r0, n0			C quotient
+ 	ldmfd	sp!, { r8, pc }
+ EPILOGUE(mpn_udiv_qrnnd)

contrib/src/gmp/rules.mak

@@ -14,6 +14,7 @@ $(TARBALLS)/gmp-$(GMP_VERSION).tar.bz2:
 gmp: gmp-$(GMP_VERSION).tar.bz2 .sum-gmp
 	$(UNPACK)
 	$(APPLY) $(SRC)/gmp/inline.diff
+	$(APPLY) $(SRC)/gmp/arm.diff
 	$(APPLY) $(SRC)/gmp/ansitest.diff
 	$(APPLY) $(SRC)/gmp/ansi2knr.diff
 	$(MOVE)