Merge latest hash and unordered developments, and add support for initialiser

lists to config.

Merged revisions 49338,49924-49927,49955,50029,50118 via svnmerge from 
https://svn.boost.org/svn/boost/trunk

........
  r49338 | danieljames | 2008-10-15 10:44:41 +0100 (Wed, 15 Oct 2008) | 2 lines
  
  Revert [49229], it fixes the same problem as [48674].
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  r49924 | danieljames | 2008-11-24 22:55:14 +0000 (Mon, 24 Nov 2008) | 1 line
  
  Extra tests for equality with different hash functions.
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  r49925 | danieljames | 2008-11-24 22:55:47 +0000 (Mon, 24 Nov 2008) | 1 line
  
  Document operator==/operator!= as undefined if the equality predicates aren't equivalent.
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  r49926 | danieljames | 2008-11-24 22:56:04 +0000 (Mon, 24 Nov 2008) | 1 line
  
  Use a larger prime number list.
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  r49927 | danieljames | 2008-11-24 23:15:55 +0000 (Mon, 24 Nov 2008) | 1 line
  
  Use aligned storage for the value.
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  r49955 | danieljames | 2008-11-27 11:42:13 +0000 (Thu, 27 Nov 2008) | 1 line
  
  Wild stab at getting destruction working on more compilers.
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  r50029 | danieljames | 2008-11-29 21:47:55 +0000 (Sat, 29 Nov 2008) | 1 line
  
  Workaround another in-place destruction.
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  r50118 | danieljames | 2008-12-04 21:30:19 +0000 (Thu, 04 Dec 2008) | 1 line
  
  Add support for initializer lists to config and the unordered containers.
........


[SVN r50451]

doc/changes.qbk

@@ -45,5 +45,21 @@ First official release.
 [h2 Boost 1.38.0]
 
 * Use [@../../libs/utility/swap.html `boost::swap`].
+* [@https://svn.boost.org/trac/boost/ticket/2237 Ticket 2237]:
+  Document that the equality and inequality operators are undefined for two
+  objects if their equality predicates aren't equivalent. Thanks to Daniel
+  Krügler.
+* [@https://svn.boost.org/trac/boost/ticket/1710 Ticket 1710]: 
+  Use a larger prime number list. Thanks to Thorsten Ottosen and Hervé
+  Brönnimann.
+* Use
+  [@../../libs/type_traits/doc/html/boost_typetraits/category/alignment.html
+  aligned storage] to store the types. This changes the way the allocator is
+  used to construct nodes. It used to construct the node with two calls to
+  the allocator's `construct` method - once for the pointers and once for the
+  value. It now constructs the node with a single call to construct and
+  then constructs the value using in place construction.
+* Add support for C++0x initializer lists where they're available (currently
+  only g++ 4.4 in C++0x mode).
 
 [endsect]

doc/hash_equality.qbk

@@ -41,6 +41,16 @@ This is a simplified version of the example at
 [@../../libs/unordered/examples/case_insensitive.hpp /libs/unordered/examples/case_insensitive.hpp]
 which supports other locales and string types.
 
+[caution
+Be careful when using the equality (`==`) operator with custom equality
+predicates, especially if you're using a function pointer. If you compare two
+containers with different equality predicates then the result is undefined.
+For most stateless function objects this is impossible - since you can only
+compare objects with the same equality predicate you know the equality
+predicates must be equal. But if you're using function pointers or a stateful
+equality predicate (e.g. boost::function) then you can get into trouble.
+]
+
 [h2 Custom Types]
 
 Similarly, a custom hash function can be used for custom types:

doc/ref.xml

@@ -678,6 +678,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
             <function name="operator!=">
@@ -700,6 +702,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
           </free-function-group>
@@ -1406,6 +1410,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
             <function name="operator!=">
@@ -1428,6 +1434,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
           </free-function-group>
@@ -2185,6 +2193,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
             <function name="operator!=">
@@ -2209,6 +2219,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
           </free-function-group>
@@ -2927,6 +2939,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
             <function name="operator!=">
@@ -2951,6 +2965,8 @@ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
               <type>bool</type>
               <notes>
                 <para>This is a boost extension.</para>
+                <para>Behavior is undefined if the two containers don't have
+                    equivalent equality predicates.</para>
               </notes>
             </function>
           </free-function-group>