Add support for registrering external options

Start of support for real profiles.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/parse.h b/parse.h
index ae6bdea..085de1a 100644
--- a/parse.h
+++ b/parse.h
@@ -1,6 +1,8 @@
 #ifndef FIO_PARSE_H
 #define FIO_PARSE_H
 
+#include "flist.h"
+
 /*
  * Option types
  */
@@ -53,11 +55,12 @@
 
 typedef int (str_cb_fn)(void *, char *);
 
-extern int parse_option(const char *, struct fio_option *, void *);
+extern int parse_option(const char *, struct fio_option *, struct flist_head *, void *);
 extern void sort_options(char **, struct fio_option *, int);
-extern int parse_cmd_option(const char *t, const char *l, struct fio_option *, void *);
+extern int parse_cmd_option(const char *t, const char *l, struct fio_option *, struct flist_head *, void *);
 extern int show_cmd_help(struct fio_option *, const char *);
 extern void fill_default_options(void *, struct fio_option *);
+extern void option_init(struct fio_option *);
 extern void options_init(struct fio_option *);
 
 extern void strip_blank_front(char **);