make the bison version check a blacklist

Let the bison version be checked by a blacklist (where no version
is blacklisted yet) and require at least bison 2.4
add excluded version exmaple
improve comments and messages as suggested
use $YACC instead of 'bison' as suggested by Yasuo
bison upgrading notes
Merge branch 'pull-request/402'

* pull-request/402:
  bison upgrading notes
  use $YACC instead of 'bison' as suggested by Yasuo
  improve comments and messages as suggested
  add excluded version exmaple
  make the bison version check a blacklist