Fix MIPS assembly code to work with newer GCC, where the "=h"
constraint is no longer supported.

--- libmad/fixed.h.orig	2004-02-16 21:02:03.000000000 -0500
+++ libmad/fixed.h	2011-10-29 18:47:21.000000000 -0400
@@ -304,8 +304,8 @@
  * significant bit depends on OPT_ACCURACY via mad_f_scale64().
  */
 #  define MAD_F_MLX(hi, lo, x, y)  \
-    asm ("mult	%2,%3"  \
-	 : "=l" (lo), "=h" (hi)  \
+    asm ("mult	%2,%3\n\tmfhi  %1"  \
+	 : "=l" (lo), "=r" (hi)  \
 	 : "%r" (x), "r" (y))
 
 # if defined(HAVE_MADD_ASM)
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<tr><td><span title='2015-09-02 09:50:25 +0200'>2015-09-02</span></td><td><a href='/guix/commit/gnu/packages/patches/guile-present-coding.patch?id=26ecc2a780e3129aa3ebd7b130f1f8f17c57b4a4'>gnu: Add missing patch for Guile-Present.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>