remove exec from efunc.

bind.c

@@ -15,6 +15,7 @@
 #include "estruct.h"
 #include "edef.h"
 #include "efunc.h"
+#include "exec.h"
 #include "file.h"
 #include "fileio.h"
 #include "line.h"

ebind.h

@@ -9,6 +9,7 @@
 #define EBIND_H_
 
 #include "crypt.h"
+#include "exec.h"
 #include "file.h"
 #include "line.h"
 

efunc.h

@@ -47,9 +47,6 @@
 /* buffer.c */
 #include "buffer.h"
 
-/* exec.c */
-#include "exec.h"
-
 /* spawn.c */
 #include "spawn.h"
 

eval.c

@@ -13,6 +13,7 @@
 #include "estruct.h"
 #include "edef.h"
 #include "efunc.h"
+#include "exec.h"
 #include "fileio.h"
 #include "line.h"
 #include "version.h"

input.c

@@ -16,6 +16,7 @@
 #include "estruct.h"
 #include "edef.h"
 #include "efunc.h"
+#include "exec.h"
 #include "wrapper.h"
 
 #if	PKCODE

names.c

@@ -5,6 +5,7 @@
  * function.
 */
 
+#include "exec.h"
 #include "crypt.h"
 #include "estruct.h"
 #include "edef.h"