ansi: add RE_DUP_MAX and CHARCLASS_NAME_MAX to limits.h
#define LINE_MAX 4096
#define PIPE_BUF 4096
+#define CHARCLASS_NAME_MAX 14
+#define RE_DUP_MAX 255
+
// This value is a guaranteed minimum, get the current maximum from sysconf
#define NGROUPS_MAX 8
// POSIX states 9 is the minimum for NL_ARGMAX
