innobase/include/pars0pars.h:
  Remove dummy yywrap() function (use %noyywrap in pars0lex.l)
innobase/pars/lexyy.c:
  New version corresponding to pars0lex.l
innobase/pars/pars0lex.l:
  Add %option statements
  Add string_append()
  Allow quotes within quotes
  Simplify the patterns for matching comments
innobase/pars/pars0pars.c:
  Remove dummy yywrap() function (use %noyywrap in pars0lex.l)
innobase/pars/pars0sym.c:
  Remove quote handling from sym_tab_add_str_lit()