* fixed bug that prevented flex from accepting certain comments in the
scanner file (resolves bugs #1849809 and #1849805)
* fix bug that prevented headers for all functions from being generated
(resolves bug #1628314)
* change yy_size_t to be size_t (resolves bug #1849812)
* new de, nl, pl, pt_br, vi translations from the translation project
* flex now provides for a libfl_pic.a compiled with position indep. code.
* introduce yylex_init_extra (c.f. manual)
* pattern language expanded (c.f. manual)
* introduce %option extra-type="your_type *"
* parse multiple short concatenated options
* better checking after yyalloc/yyrealloc
* Expose YY_BUF_SIZE in the header file.
* better escape of filenames with special characters
* memory leaks were plugged
* support case-insensitive patterns
* POSIX character classes may be negated in patterns
* patterns may now use set difference, union operators
* c++ scanner updates
* updated translations
