Move src/re.h to include/mruby/re.h .

src/re.h → include/mruby/re.h

 /*
-** re.h - Regexp class
+** mruby/re.h - Regexp class
 **
 ** See Copyright Notice in mruby.h
 */
 
-#ifndef RE_H
-#define RE_H
+#ifndef MRUBY_RE_H
+#define MRUBY_RE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define REGEXP_CLASS          "Regexp"
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  /* RE_H */

src/codegen.c

@@ -16,7 +16,7 @@
 #include "mruby/debug.h"
 #include "node.h"
 #include "opcode.h"
-#include "re.h"
+#include "mruby/re.h"
 #include "mrb_throw.h"
 
 typedef mrb_ast_node node;

src/string.c

@@ -14,7 +14,7 @@
 #include "mruby/class.h"
 #include "mruby/range.h"
 #include "mruby/string.h"
-#include "re.h"
+#include "mruby/re.h"
 
 #define STR_EMBED_P(s) ((s)->flags & MRB_STR_EMBED)
 #define STR_SET_EMBED_FLAG(s) ((s)->flags |= MRB_STR_EMBED)