Fixes for MSVC 7.1, Borland.


[SVN r62530]
Some changes for Symbian support.


[SVN r62531]
Fix typo in tutorial. Refs #4252.


[SVN r62549]
Ensure unsigned char is used with isdigit. Refs #4201.


[SVN r62556]
Fix handling of empty buffer sequences.


[SVN r62558]
Update various libraries' documentation build.

Mostly to use the images and css files under doc/src instead of
doc/html, usually be deleting the settings in order to use the defaults.
Also add 'boost.root' to some builds in order to fix links which rely on
it.

[SVN r63146]
Fix coroutine macros to work with MSVC's edit-and-continue debug settings.


[SVN r63568]
Reworked timeout examples.


[SVN r63569]
Ensure arguments to handlers are passed as const types.


[SVN r63570]
Fences for arm.


[SVN r63571]
Fences for arm.


[SVN r63572]
Fix forward declaration.


[SVN r63573]
Add cancellation of reactor operations.


[SVN r63574]
Fixes in non_blocking_read.


[SVN r63575]
Make more tolerant of different platform sdk variants.


[SVN r63576]
Eliminate unnecessary uses of hash_map.


[SVN r63577]
Point docs at new timeout examples.


[SVN r63578]
Add missing operator+ overload. Refs #4382.


[SVN r63592]
Fix unused parameters.


[SVN r63594]
Add missing parameter.


[SVN r63646]