position in the file. This allows c++ lexers to build.
Fixes PR 8258 from Nick Hudson (uses a slightly different fix than
the one Nick supplies) and problems with c++ lexers described on
tech-pkg by Berndt Josef Wulf.
- extend __GNUC__ if (0) hack for lint, make it use an unused
variable, and move it in reachable code.
- fread and fwrite size_t casts.
- use yy_size_t where appropriate.