add openat to gnulib module list

[Paul Eggert]

I installed this, to correct what I assume is merely an oversight:

2006-11-20  Paul Eggert  <address@hidden>

        * MODULES.html.sh (File system functions): Add openat.

--- MODULES.html.sh     14 Nov 2006 22:01:14 -0000      1.160
+++ MODULES.html.sh     20 Nov 2006 22:06:59 -0000
@@ -1992,6 +1992,7 @@
   func_module mkdir-p
   func_module modechange
   func_module mountlist
+  func_module openat
   func_module pathname
   func_module pathmax
   func_module same
@@ -2237,7 +2238,7 @@
   func_module uptime
   func_end_table
 }
- 
+

 func_tmpdir
 trap 'exit_status=$?