Updated changelog
Repaired split index entries, added icmake/svnclean for local use
yo/history.yo updated to 7.0.1
Further refinements to string/members
minor text repairs
Processed remarks by Edward Welbourne
Processed ESR's remarks
Processed esr's remarks up to chapter 14
Processed esr's remarks up to ch. 11
Processed esr's remarks up to ch. 8