move src/error.h to include/mruby/error.h

src/class.c

@@ -13,7 +13,7 @@
 #include "mruby/proc.h"
 #include "mruby/string.h"
 #include "mruby/variable.h"
-#include "error.h"
+#include "mruby/error.h"
 
 KHASH_DEFINE(mt, mrb_sym, struct RProc*, 1, kh_int_hash_func, kh_int_hash_equal)
 

src/error.c

@@ -14,7 +14,7 @@
 #include "mruby/string.h"
 #include "mruby/variable.h"
 #include "mruby/debug.h"
-#include "error.h"
+#include "mruby/error.h"
 
 mrb_value
 mrb_exc_new(mrb_state *mrb, struct RClass *c, const char *ptr, long len)

src/kernel.c

@@ -10,7 +10,7 @@
 #include "mruby/proc.h"
 #include "mruby/string.h"
 #include "mruby/variable.h"
-#include "error.h"
+#include "mruby/error.h"
 
 typedef enum {
     NOEX_PUBLIC    = 0x00,

src/vm.c

@@ -17,7 +17,7 @@
 #include "mruby/range.h"
 #include "mruby/string.h"
 #include "mruby/variable.h"
-#include "error.h"
+#include "mruby/error.h"
 #include "opcode.h"
 #include "value_array.h"