Cast to base added to avoid a call to the convertir constructor/assignment (see Tickes 1419 and 1420)

[SVN r41381]
optional docs fixes

[SVN r43247]
redirect optional docs to new version

[SVN r43248]
Improved swap for optional<T>, co-written by Thorsten and Fernando: added support for tweaking whether swap should use T's default constructor. Added swap member function. Discussed at Boost developers' mailing list, "[optional] problems with swap()", http://lists.boost.org/Archives/boost/2008/04/135882.php

[SVN r44766]
Added unit tests, testing optional<T> swap improvements of revision [44766] 

[SVN r44767]
Merge in documentation fixes.  Apart from the change to optional's documenation
Jamfile, which I included by mistake.

Fixes #1659, #1661, #1684, #1685, 1687, #1690, #1801

I wrote about this at:

http://lists.boost.org/Archives/boost/2008/04/136405.php

Merged revisions 44585-44806 via svnmerge from 
https://svn.boost.org/svn/boost/branches/doc

........
  r44585 | danieljames | 2008-04-19 16:25:27 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix broken link to vacpp in bjam docs. Refs #1512
........
  r44586 | danieljames | 2008-04-19 16:27:36 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix broken link to bcpp in bjam docs. Refs #1513
........
  r44587 | danieljames | 2008-04-19 16:33:58 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  DateTime documentation - Fix a link to the serialization library. Refs #1659
........
  r44588 | danieljames | 2008-04-19 16:35:36 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix some links in interprocess & intrusive. Refs #1661
........
  r44589 | danieljames | 2008-04-19 16:37:39 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix some links in the python docs. Refs #1684.
........
  r44590 | danieljames | 2008-04-19 16:38:29 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Work around a quickbook bug which is affecting the python docs. Refs #1684.
........
  r44591 | danieljames | 2008-04-19 16:39:34 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix a broken link in the numeric conversion docs. Refs #1685
........
  r44592 | danieljames | 2008-04-19 16:40:45 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix some links in the optional docs. Refs #1687
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  r44593 | danieljames | 2008-04-19 16:42:09 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix link to the hash documentation from bimap. Refs #1690
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  r44599 | danieljames | 2008-04-19 18:07:33 +0100 (Sat, 19 Apr 2008) | 2 lines
  
  Fix a typo in the format library. Refs #1801
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  r44600 | danieljames | 2008-04-19 19:20:59 +0100 (Sat, 19 Apr 2008) | 1 line
  
  Initialise svnmerge.
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  r44641 | danieljames | 2008-04-20 18:59:47 +0100 (Sun, 20 Apr 2008) | 2 lines
  
  Fix the lincense url in shared container iterator documentation.
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  r44642 | danieljames | 2008-04-20 19:00:00 +0100 (Sun, 20 Apr 2008) | 2 lines
  
  Fix image link in the mpi documentation.
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  r44643 | danieljames | 2008-04-20 19:00:11 +0100 (Sun, 20 Apr 2008) | 2 lines
  
  Fix a typo in the spirit docs.
........
  r44644 | danieljames | 2008-04-20 19:00:23 +0100 (Sun, 20 Apr 2008) | 2 lines
  
  Escape the slash so that quickbook doesn't think it the start of an italic section, and mess up the link. Refs #1844
........
  r44647 | danieljames | 2008-04-20 19:39:47 +0100 (Sun, 20 Apr 2008) | 2 lines
  
  Fix another typo in spirit docs.
........


[SVN r44807]
Added forward declaration of optional<T>'s boost::swap overload, as mentioned at http://article.gmane.org/gmane.comp.lib.boost.devel/174350 "Re: [optional] problems with swap()"

[SVN r44825]
Replaced "using std::swap" by "using boost::swap" within optional::swap member function, hoping to fix GCC test failures, as mentioned at http://article.gmane.org/gmane.comp.lib.boost.devel/174350 "Re: [optional] problems with swap()"

[SVN r44826]
Added forward declaration of boost::optional_swap_should_use_default_constructor.

[SVN r45264]
Added more optional::swap tests, especially on self swap, on specializing boost::swap for optional<T>, and on swapping optional<T> when T is a template class.

[SVN r45265]
Fixed syntax of optional_swap_should_use_default_constructor and swap template specializations that I added 2 days ago (changeset [45265]). Was accepted by MSVC, but rejected by other compilers.

[SVN r45295]
Continuing merge of CMake build system files into trunk with the encouragement of Doug Gregor

[SVN r49510]
Updating CMake files to latest trunk. Added dependency information for regression tests and a few new macros for internal use.


[SVN r49627]
Updating dependency information for modularized libraries.


[SVN r49628]
Fix an incorrectly escaped right arrow.

[SVN r50839]
Fix the optional and numeric/conversion docs so they generate valid Docbook XML that can be transformed into PDF's.
Regenerated HTML versions of the docs.

[SVN r51218]
Add PDF generation options to fix external links to point to the web site.
Added a few more Boostbook based libs that were missed first time around.
Fixed PDF naming issues.

[SVN r51284]
optional docs in cmakeland

[SVN r52251]
Fixed most tab and min/max issues from trunk inspection report

[SVN r53141]
avoid C style casts

[SVN r53671]