Merged in fixes from trunk.

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  r42119 | chris_kohlhoff | 2007-12-18 00:04:30 +1100 (Tue, 18 Dec 2007) | 2 lines
  
  Fixes for older HP-UX.
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  r42121 | chris_kohlhoff | 2007-12-18 00:17:46 +1100 (Tue, 18 Dec 2007) | 2 lines
  
  Documentation fixes.
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  r42750 | chris_kohlhoff | 2008-01-15 00:13:35 +1100 (Tue, 15 Jan 2008) | 2 lines
  
  Fix concept name in comment.
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  r42752 | chris_kohlhoff | 2008-01-15 00:20:06 +1100 (Tue, 15 Jan 2008) | 2 lines
  
  Add missing broken pipe error.
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  r42753 | chris_kohlhoff | 2008-01-15 00:21:37 +1100 (Tue, 15 Jan 2008) | 3 lines
  
  Don't include sys/time.h when compiling with aCC, as that header does not
  supply pselect(), which is needed for HP-UX/aCC to work correctly.
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  r42754 | chris_kohlhoff | 2008-01-15 00:22:21 +1100 (Tue, 15 Jan 2008) | 2 lines
  
  Disable noisy and incorrect /Wp64 warnings generated by MSVC.
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  r42755 | chris_kohlhoff | 2008-01-15 00:24:28 +1100 (Tue, 15 Jan 2008) | 3 lines
  
  Don't call epoll_wait/kevent if there are no old operations (where old means
  added prior to the last epoll_wait/kevent call) needing to be demultiplexed.
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  r42756 | chris_kohlhoff | 2008-01-15 00:25:24 +1100 (Tue, 15 Jan 2008) | 2 lines
  
  Silence some integer truncation warnings.
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  r42758 | chris_kohlhoff | 2008-01-15 00:27:52 +1100 (Tue, 15 Jan 2008) | 8 lines
  
  Silence some integer truncation warnings.
  
  Only perform the windows-bug workaround where we use a short timeout with
  GetQueuedCompletionStatus from one thread, i.e. the timer thread.
  
  Keep track of the number of OVERLAPPED-derived operations to ensure that
  they all get cleaned up when the io_service is destroyed.
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  r42759 | chris_kohlhoff | 2008-01-15 00:29:08 +1100 (Tue, 15 Jan 2008) | 5 lines
  
  Check for truncation when converting buffer size from size_t to openssl's
  int argument.
  
  Try to fix possible thread-safety issues in SSL wrapper.
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  r42817 | chris_kohlhoff | 2008-01-17 00:46:01 +1100 (Thu, 17 Jan 2008) | 2 lines
  
  Set the openssl callback function for getting a thread ID.
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  r43054 | chris_kohlhoff | 2008-02-02 22:37:45 +1100 (Sat, 02 Feb 2008) | 4 lines
  
  Ensure that the workaround for the MSVC secure iterator problem is only
  used when compiling with MSVC. The workaround causes g++'s library debug
  mode to report errors due to the assignment from a singular iterator.
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  r43055 | chris_kohlhoff | 2008-02-02 22:39:17 +1100 (Sat, 02 Feb 2008) | 2 lines
  
  Fix "possible loss of data" warning when building for Windows 2000 targets.
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  r43056 | chris_kohlhoff | 2008-02-02 23:02:23 +1100 (Sat, 02 Feb 2008) | 3 lines
  
  The latest Windows SDKs don't support IPv6 when building for Windows 2000,
  so we need to use the SDK emulation in that case.
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  r43221 | chris_kohlhoff | 2008-02-12 00:59:44 +1100 (Tue, 12 Feb 2008) | 2 lines
  
  Need to define _XOPEN_SOURCE_EXTENDED when compiling for HP-UX.
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  r43301 | chris_kohlhoff | 2008-02-19 00:31:26 +1100 (Tue, 19 Feb 2008) | 2 lines
  
  Fix printing of error messages.
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  r43302 | chris_kohlhoff | 2008-02-19 00:33:23 +1100 (Tue, 19 Feb 2008) | 2 lines
  
  Only define _XOPEN_SOURCE_EXTENDED when building with gcc on HP-UX.
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  r43303 | chris_kohlhoff | 2008-02-19 00:35:15 +1100 (Tue, 19 Feb 2008) | 3 lines
  
  Add missing #include of socket_types.hpp needed for the SSL unit tests
  to compile successfully on Windows.
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[SVN r43342]

libs/asio

@@ -1 +1 @@
-Subproject commit 7dc5987fad94132dbe1120f879dc61cc6f29a28c
+Subproject commit c5c569f0f5b7e276e0c17e10251776e029f2e10c