Merge remote-tracking branch 'origin/maint'

* origin/maint:
  misc: pacify the Tiny C Compiler
  cpp: make the check of Flex version portable
  misc: require getline
  c++: support wide strings for file names
  doc: document carets
  tests: enhance existing tests with carets
  errors: show carets
  getargs: add support for --flags/-f

Conflicts:
	doc/bison.texi
	m4/.gitignore
	src/complain.c
	src/flex-scanner.h
	src/getargs.c
	src/getargs.h
	src/gram.c
	src/main.c
	tests/headers.at

src/main.c

@@ -215,5 +215,7 @@ main (int argc, char *argv[])
   timevar_stop (TV_TOTAL);
   timevar_print (stderr);
 
+  cleanup_caret ();
+
   return complaint_status ? EXIT_FAILURE : EXIT_SUCCESS;
 }