Log Message:
Update to 7.6.86:

Changes since Pike 7.6.66
----------------------------------------------------------------------

Changes in Pike:

o Added support for "100 Continue" to Protocols.HTTP.Server.
o Fixed Keep alive issues in Protocols.HTTP.Server. 
o Fixed SSL.sslfile to ensure that a read callback gets a call if it's
  installed when there already is data in the internal read buffer.
o Fixed Cache.cache to work without threads again.
o Fixed a typo in Array.diff3 that in some rare cases caused it to
  merge a difference into a three-way equality.
o Fixed a bug where reused local variables weren't cleared properly.
o Fixed sorting order for huge characters.
o The values returned by Thread.status is now available as constants
  in the Thread module.
o Added peek() method to ADT.Heap and Priority_queue.
o Fixed "file not open" error when performing multiple operations on a
  Filesystem.Tar file.
o Fixed a rare PNG decoding issue.
o Proper handling of NULL elements in Postgres.
o Fix for potential SQL injection vulnerability in Postgres.
o Added support for WSAECONNRESET in SSL on win32.

Other:

o Fixed bug causing local variables to never be reused, which in turn
  leads to huge stack frames.
o Fix to avoid the cleanup thread becoming garbage when the cache
  object is destructed.
o Various UCS-2/SQLWCHAR related fixes in Odbc. Potentially fixes
  problems where wchar_t is 4 bytes (eg MacOS X).
o More multiset gc fixes.
o Fixed support for running dmalloc Pike with -d.

Build fixes:
o Fixed VC8 compilation.
o Fixed support for C++ modules.
o Improved support for Darwin x86.