Add tests for escaped template calls.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85284 b8fc166d-592f-0410-95f2-cb63ce0dd405
Make escaped punctuation templates illegal in 1.6.

There's a minor bug with escaped templates in 1.6 and I don't have time to
fix it, this will help limit its effect. As far as I'm aware no one uses
escaped templates with punctuation templates. Escaped templates are an
undocumented feature anyway.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85285 b8fc166d-592f-0410-95f2-cb63ce0dd405
Be a little smarter about skipping escaped templates.

Only possible since I made escaping punctuation templates illegal.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85286 b8fc166d-592f-0410-95f2-cb63ce0dd405
Some notes about recent quickbook changes.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85287 b8fc166d-592f-0410-95f2-cb63ce0dd405
Split up the language version chapter.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85288 b8fc166d-592f-0410-95f2-cb63ce0dd405
Stop mismatched brackets causing an error with old quickbook.

Mismatched brackets are only an error for quickbook 1.6+.

git-svn-id: https://svn.boost.org/svn/boost/trunk/tools/quickbook@85289 b8fc166d-592f-0410-95f2-cb63ce0dd405