Manual Changelog update


Docs/manual.texi:
  Changelog
client/mysqladmin.c:
  Fix for 'mysqladmin -w1 unknown-command'
libmysql/violite.c:
  Fix for TCP_NODELAY
mysql-test/mysql-test-run.sh:
  Portability fixes
sql/sql_lex.cc:
  Cleanup
sql/sql_lex.h:
  Cleanup