Fixes a fatal constness error with g++ 4.8.2.
--- aegis-4.24/common/ac/string/memmem.cc	2008-03-14 07:19:27.000000000 +0100
+++ aegis-4.24/common/ac/string/memmem.cc	2014-01-26 11:17:58.000000000 +0100
@@ -182,7 +182,7 @@
 
     // Use optimizations in memchr when possible.
     if (needle_len == 1)
-        return memchr(haystack, *needle, haystack_len);
+        return (void *) memchr(haystack, *needle, haystack_len);
 
     // Minimizing the worst-case complexity:
     // Let n = haystack_len, m = needle_len.
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<tr><td><span title='2020-05-22 16:11:52 +0200'>2020-05-22</span></td><td><a href='/guix/commit/doc/local.mk?id=cd5d5f53228fd5bf96d9f790aa2606ae71fa68d7'>doc: Update 'Bootstrapping' for further binary seed reduction.</a><span class='msg-avail'>...</span></td><td>Jan Nieuwenhuizen</td></tr>
<tr><td><span title='2020-04-24 16:24:01 +0200'>2020-04-24</span></td><td><a href='/guix/commit/doc/local.mk?id=7dd05396ef4539165f955d9ab57225091f801ce9'>doc: Ensure guix-daemon is built before creating guix-daemon.1.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2020-04-23 23:59:23 +0200'>2020-04-23</span></td><td><a href='/guix/commit/doc/local.mk?id=62bc3c5b04d43ccd24922e45b79fab00f7298e10'>build: Don't build man pages when cross-compiling.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-04-23 23:59:22 +0200'>2020-04-23</span></td><td><a href='/guix/commit/doc/local.mk?id=d9e83f2a6460d9716b5dc93cf61ac120c10f6906'>doc: Build more man pages.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-04-16 23:41:52 +0200'>2020-04-16</span></td><td><a href='/guix/commit/doc/local.mk?id=c9f321e52a99dea93fcc099372ea0167150b9aac'>doc: Document building and installing from JSON files.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2020-02-17 06:52:11 +0000'>2020-02-17</span></td><td><a href='/guix/commit/doc/local.mk?id=f98e83a17fa30587520e858231ec9c61f3624ecd'>doc: Add German Cookbook translation.</a><span class='msg-avail'>...</span></td><td>Florian Pelz</td></tr>