bpo-38110: Use fdwalk for os.closerange() when available. (GH-15224)
Use fdwalk() on platforms that support it to implement os.closerange().
diff --git a/configure b/configure
index cb60ce2..25f9de9 100755
--- a/configure
+++ b/configure
@@ -11500,7 +11500,7 @@
for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
clock confstr copy_file_range ctermid dup3 execv explicit_bzero explicit_memset \
faccessat fchmod fchmodat fchown fchownat \
- fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \
+ fdwalk fexecve fdopendir fork fpathconf fstatat ftime ftruncate futimesat \
futimens futimes gai_strerror getentropy \
getgrgid_r getgrnam_r \
getgrouplist getgroups getlogin getloadavg getpeername getpgid getpid \