Add a quick guide on upgrading to 1.6

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85428 b8fc166d-592f-0410-95f2-cb63ce0dd405
A little copy editting for the 1.7 description.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85429 b8fc166d-592f-0410-95f2-cb63ce0dd405
Remove 'not ready' notes about block markup in lists.

The recent improvements to list generation have left me feeling more confident
about this.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85430 b8fc166d-592f-0410-95f2-cb63ce0dd405
Fix standalone images in quickbook.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85431 b8fc166d-592f-0410-95f2-cb63ce0dd405
Remove duplicate 1.6 notes.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85435 b8fc166d-592f-0410-95f2-cb63ce0dd405
add missing cctype #include to fix msvc build

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85438 b8fc166d-592f-0410-95f2-cb63ce0dd405
Start a more general intro to the documentation tools.

Mostly just the content from the wiki. I left out installing latex for now,
as it's a bit tricky, and rarely required.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85468 b8fc166d-592f-0410-95f2-cb63ce0dd405
First example of building documentation with boost build.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85470 b8fc166d-592f-0410-95f2-cb63ce0dd405