Provide a 'mach_print' symbol in libc.

--- a/sysdeps/mach/hurd/i386/libc.abilist	2020-04-01 19:22:44.710088821 +0200
+++ b/sysdeps/mach/hurd/i386/libc.abilist	2020-04-01 19:22:52.062051161 +0200
@@ -338,6 +338,7 @@
 GLIBC_2.2.6 __mach_port_allocate F
 GLIBC_2.2.6 __mach_port_deallocate F
 GLIBC_2.2.6 __mach_port_insert_right F
+GLIBC_2.21 __mach_print F
 GLIBC_2.2.6 __mach_reply_port F
 GLIBC_2.2.6 __mach_task_self_ D 0x4
 GLIBC_2.2.6 __mach_thread_self F

--- a/mach/Versions
+++ b/mach/Versions
@@ -56,6 +56,7 @@
   }
   GLIBC_2.21 {
     __mach_host_self_;
+    mach_print;
   }
 
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<tr><td><span title='2024-07-11 15:58:24 -0500'>2024-07-11</span></td><td><a href='/guix/commit/gnu/packages/rdesktop.scm?id=7e9a6836cd529e7d5f6fe7ee0167b09c989ee72e'>gnu: xrdp: update to 0.10.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/rdesktop.scm (xrdp): Update to 0.10.0.
  [native-inputs]: Add cmocka.

Change-Id: Ifdf6e8759753d49a8f169aac128a943be71f2958
Signed-off-by: jgart &lt;jgart@dismail.de&gt;
</span></span></td><td>Andy Tai</td></tr>
<tr><td><span title='2024-04-26 16:53:48 +0100'>2024-04-26</span></td><td><a href='/guix/commit/gnu/packages/rdesktop.scm?id=de42b5f9d190f2781f2f0cb2d400d3b192a68462'>gnu: freerdp: Update to 2.11.7.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/rdesktop.scm (freerdp): Update to 2.11.7.

Change-Id: I41385d4db719e950438c07d2149c845ee28cabce
Signed-off-by: Christopher Baines &lt;mail@cbaines.net&gt;
</span></span></td><td>Andy Tai</td></tr>