Merge from mainline.

diff --cc ChangeLog
index 8a76e9979053c389943fc2ed376b692d601f58dc,d13832b9060e807aef808c4bcaf51d6eb48dca92..5d840caf4911a050d79e71f840affd730469f479
--- 1/ChangeLog
--- 2/ChangeLog
+++ b/ChangeLog
@@@ -1,16 -1,8 +1,19 @@@
- 2011-03-21  Paul Eggert  <eggert@cs.ucla.edu>
++2011-03-22  Paul Eggert  <eggert@cs.ucla.edu>
 +
 +      * Makefile.in (GNULIB_MODULES): Add socklen.
 +      * configure.in: Do not check for sys/socket.h, since socklen does that.
 +      * m4/socklen.m4: New automatically-generated file, from gnulib.
 +
- 2011-03-21  Paul Eggert  <eggert@cs.ucla.edu>
- 
 +      fakemail: Remove dependency on ignore-value.
 +      * Makefile.in (GNULIB_MODULES): Add stdio.
 +      * lib/stdio.in.h, m4/stdio_h.m4: New files, automatically
 +      imported from gnulib.
 +      * .bzrignore: Add lib/stdio.h.
+ 2011-03-22  Glenn Morris  <rgm@gnu.org>
+ 
+       * autogen/copy_autogen: Work from ./ or ../.
+       Fix time-stamps.
+       * autogen.sh: Doc fix.
  
  2011-03-20  Glenn Morris  <rgm@gnu.org>