Move test_gdb issues to the Tests section.
Library
-------
-- Issues #8279, #8330, #8437: Fix test_gdb failures, patch written by Dave Malcolm
-
- Issue #6547: Added the ignore_dangling_symlinks option to shutil.copytree.
- Issue #1540112: Now allowing the choice of a copy function in
Tests
-----
+- Issues #8279, #8330, #8437, #8480: Fix test_gdb failures, patch written by
+ Dave Malcolm
+
- Issue #3864: Skip three test_signal tests on freebsd6 because they fail
if any thread was previously started, most likely due to a platform bug.