- sys.path[0] (the directory from which the script is loaded) is now
  turned into an absolute pathname, unless it is the empty string.
  (SF patch #664376, by Skip Montanaro.)
diff --git a/configure.in b/configure.in
index 8fce1cd..0b893a5 100644
--- a/configure.in
+++ b/configure.in
@@ -1843,7 +1843,7 @@
  getpriority getpwent getwd \
  hstrerror inet_aton inet_pton kill killpg lchown lstat mkfifo mknod mktime \
  mremap nice pathconf pause plock poll pthread_init \
- putenv readlink \
+ putenv readlink realpath \
  select setegid seteuid setgid \
  setlocale setregid setreuid setsid setpgid setuid setvbuf snprintf \
  sigaction siginterrupt sigrelse strftime strptime \