Add missing include that triggers a build failure on PowerPC:

  ../../../../gcc-5.4.0/libsanitizer/asan/asan_linux.cc: In function ‘bool __asan::AsanInterceptsSignal(int)’:
  ../../../../gcc-5.4.0/libsanitizer/asan/asan_linux.cc:222:20: error: ‘SIGSEGV’ was not declared in this scope
     return signum == SIGSEGV && common_flags()->handle_segv;
		      ^
From <https://patchwork.ozlabs.org/patch/725596/>.

diff --git a/libsanitizer/asan/asan_linux.cc b/libsanitizer/asan/asan_linux.cc
index c504168..59087b9 100644
--- a/libsanitizer/asan/asan_linux.cc
+++ b/libsanitizer/asan/asan_linux.cc
@@ -29,6 +29,7 @@
 #include <dlfcn.h>
 #include <fcntl.h>
 #include <pthread.h>
+#include <signal.h>
 #include <stdio.h>
 #include <unistd.h>
 #include <unwind.h>
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<tr><td><span title='2024-12-13 20:15:41 +0000'>2024-12-13</span></td><td><a href='/guix/commit/gnu/packages/vim.scm?id=fdc0fefd46a45b70784a4e3f8900cbe593426a9e'>build-system/pyproject: Use python-sans-pip-wrapper as default-python.</a><span class='msg-avail'>...<span class='msg-tooltip'>Also adds python-setuptools and python-wheel to relevant packages,
either to native-inputs or to propagated inputs if the pkg_resources
Python module is loaded at runtime.

* guix/build-system/pyproject.scm (default-python): Default to
python-sans-pip-wrapper.

Change-Id: I2d986c2225114f54459dd6bb360913106e52cdf4
</span></span></td><td>Lars-Dominik Braun</td></tr>
<tr><td><span title='2024-11-27 18:14:28 +0200'>2024-11-27</span></td><td><a href='/guix/commit/gnu/packages/vim.scm?id=050407b473ac755c911be678b02626d40b25c122'>gnu: vim: Update to 9.1.0889.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/vim.scm (vim): Update to 9.1.0889.
[arguments]: Adjust the custom 'skip-or-fix-failing-tests to skip
another test.

Change-Id: I82806677bd9e33c6e683e3befb563631b4947cbe
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2024-09-30 11:06:23 +0300'>2024-09-30</span></td><td><a href='/guix/commit/gnu/packages/vim.scm?id=2903d12a0de4ba76e2430d690491aa152085ca63'>gnu: vim-guix-vim: Update to 0.4.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/vim.scm (vim-guix-vim): Update to 0.4.1.

Change-Id: I12a38efdbd6c0f9d8ce2155e7d7ecb0032739f0c
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2024-09-29 10:06:54 +0300'>2024-09-29</span></td><td><a href='/guix/commit/gnu/packages/vim.scm?id=2263c61aef3fbc374b2eae8abcd1498d19ad7124'>gnu: vim: Update to 9.1.0744.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/vim.scm (vim): Update to 9.1.0744.
[arguments]: Delete another test in the 'skip-or-fix-failing-tests
phase.

Change-Id: Ic36691592abd350686df78d189196f827878be0b
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2024-08-31 10:45:18 +0200'>2024-08-31</span></td><td><a href='/guix/commit/gnu/packages/vim.scm?id=2e89e9f20abfeb8744bc3a0282a3164e379fe058'>gnu: vim-vlime: Fix build.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/vim.scm (vim-vlime)[arguments]: Correct order of phases.

Change-Id: I449cceff6022cee481840e49b732a8bba8031a61
</span></span></td><td>宋文武</td></tr>