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)
n'><a href='/'>index</a> : <a href='/guix/'>guix</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='ba66383cd685b15a8fc8a29e446a4febe20f36b7'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>refs</a><a class='active' href='/guix/log/gnu/packages/libevent.scm'>log</a><a href='/guix/tree/gnu/packages/libevent.scm?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>tree</a><a href='/guix/commit/gnu/packages/libevent.scm?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>commit</a><a href='/guix/diff/gnu/packages/libevent.scm?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/libevent.scm'>
<input type='hidden' name='id' value='ba66383cd685b15a8fc8a29e446a4febe20f36b7'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>root</a>/<a href='/guix/log/gnu?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>gnu</a>/<a href='/guix/log/gnu/packages?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>packages</a>/<a href='/guix/log/gnu/packages/libevent.scm?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7'>libevent.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/libevent.scm?id=ba66383cd685b15a8fc8a29e446a4febe20f36b7&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-03-20 18:49:06 +0100'>2023-03-20</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=ccb62d8feb50e2859d7c41429a9e3d9e0fe30bfe'>Merge remote-tracking branch 'origin/master' into core-updates</a></td><td>Andreas Enge</td></tr>
<tr><td><span title='2023-03-19 16:11:53 +0100'>2023-03-19</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=ef86b0b12e75408bd7a8e69a7a2c5ef33be4a49d'>gnu: Add libuv-for-r-httpuv.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2023-01-30 12:39:40 +0200'>2023-01-30</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=4cf1acc7f3033b50b0bf19e02c9f522d522d338c'>Merge remote-tracking branch 'origin/master' into core-updates</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-12-08 19:53:16 +0200'>2022-12-08</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=02d591206259b30462764cb2f978ae214dea0449'>gnu: julia: Update to 1.8.3.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2022-10-23 15:56:19 +0200'>2022-10-23</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=3734857fc55df2c599c2fe5cc4ae49f5d47879fc'>gnu: libevent: Prefix (guix licenses) bindings.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2022-10-23 15:56:19 +0200'>2022-10-23</span></td><td><a href='/guix/commit/gnu/packages/libevent.scm?id=9ed4251d70fb62e176f927129934a76a3dad2d64'>gnu: Add libevent-with-openssl.</a><span class='msg-avail'>...</span></td><td>Thomas Albers</td></tr>