type traits update [added is_convertible and alignment_of]

[SVN r7675]

include/boost/detail/call_traits.hpp

@@ -6,6 +6,9 @@
 
 //  See http://www.boost.org for most recent version including documentation.
 
+// call_traits: defines typedefs for function usage
+// (see libs/utility/call_traits.htm)
+
 /* Release notes:
    23rd July 2000:
       Fixed array specialization. (JM)

include/boost/detail/compressed_pair.hpp

@@ -6,6 +6,8 @@
 
 //  See http://www.boost.org for most recent version including documentation.
 
+// compressed_pair: pair that "compresses" empty members
+// (see libs/utility/compressed_pair.htm)
 //
 // JM changes 25 Jan 2000:
 // Removed default arguments from compressed_pair_switch to get

include/boost/detail/ob_call_traits.hpp

@@ -7,6 +7,7 @@
 //  See http://www.boost.org for most recent version including documentation.
 //
 //  Crippled version for crippled compilers:
+//  see libs/utility/call_traits.htm
 //
 #ifndef BOOST_OB_CALL_TRAITS_HPP
 #define BOOST_OB_CALL_TRAITS_HPP

include/boost/detail/ob_compressed_pair.hpp

@@ -5,6 +5,7 @@
 //  warranty, and with no claim as to its suitability for any purpose.
 
 //  See http://www.boost.org for most recent version including documentation.
+//  see libs/utility/compressed_pair.hpp
 //
 /* Release notes:
    23rd July 2000: