Add the new allocator constructors, use composition instead of inheritance for the implementation and some small fixes.

Merged revisions 43922,43962,43966,43971,43981,43995-43996,44042,44046-44048,44057 via svnmerge from 
https://svn.boost.org/svn/boost/branches/unordered/trunk

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  r43922 | danieljames | 2008-03-29 14:55:59 +0000 (Sat, 29 Mar 2008) | 1 line
  
  Fix some typos in the reference documentation.
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  r43962 | danieljames | 2008-03-31 18:29:59 +0100 (Mon, 31 Mar 2008) | 1 line
  
  Add a name variable to the release script, so that I can have different release names in different branches.
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  r43966 | danieljames | 2008-03-31 18:43:16 +0100 (Mon, 31 Mar 2008) | 1 line
  
  Fix the image directory for standalone docs.
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  r43971 | danieljames | 2008-03-31 19:17:25 +0100 (Mon, 31 Mar 2008) | 1 line
  
  Fix the unordered stylesheet.
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  r43981 | danieljames | 2008-04-01 13:31:26 +0100 (Tue, 01 Apr 2008) | 2 lines
  
  Cast the pointer in the Visual C++ 6.5 _Charalloc method.
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  r43995 | danieljames | 2008-04-02 12:50:27 +0100 (Wed, 02 Apr 2008) | 1 line
  
  Try using the interprocess containers for testing. Compilation is a bit slower but hopefully I'll run into less cross-platform problems.
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  r43996 | danieljames | 2008-04-02 13:25:49 +0100 (Wed, 02 Apr 2008) | 1 line
  
  Revert my experiment with the interprocess containers. It didn't work out.
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  r44042 | danieljames | 2008-04-04 20:38:09 +0100 (Fri, 04 Apr 2008) | 1 line
  
  Make hash table data a member of hash table, instead of a base.
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  r44046 | danieljames | 2008-04-05 12:38:05 +0100 (Sat, 05 Apr 2008) | 1 line
  
  Remove rvalue_ref from Jamfile.v2 - I didn't mean to check it in.
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  r44047 | danieljames | 2008-04-05 12:39:38 +0100 (Sat, 05 Apr 2008) | 1 line
  
  New constructors with allocators.
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  r44048 | danieljames | 2008-04-05 12:58:11 +0100 (Sat, 05 Apr 2008) | 1 line
  
  Document the new constructors.
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  r44057 | danieljames | 2008-04-05 17:08:23 +0100 (Sat, 05 Apr 2008) | 1 line
  
  Fix some bugs in the exception testing code.
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[SVN r44417]

test/helpers/allocator.hpp

@@ -70,7 +70,7 @@ namespace test
             using namespace std;
             T* ptr = static_cast<T*>(malloc(n * sizeof(char)));
             if(!ptr) throw std::bad_alloc();
-            return ptr;
+            return (char*) ptr;
         }
 #endif
     };