bpo-12822: use monotonic clock for condvar if possible (GH-11723)

diff --git a/configure b/configure
index b78a7b2..867e2fc 100755
--- a/configure
+++ b/configure
@@ -11448,7 +11448,8 @@
  memrchr mbrtowc mkdirat mkfifo \
  mkfifoat mknod mknodat mktime mremap nice openat pathconf pause pipe2 plock poll \
  posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
- pthread_init pthread_kill putenv pwrite pwritev pwritev2 readlink readlinkat readv realpath renameat \
+ pthread_condattr_setclock pthread_init pthread_kill putenv pwrite pwritev pwritev2 \
+ readlink readlinkat readv realpath renameat \
  sem_open sem_timedwait sem_getvalue sem_unlink sendfile setegid seteuid \
  setgid sethostname \
  setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \