patch 8.0.1034: sending buffer lines to terminal doesn't work on MS-Windows

Problem:    Sending buffer lines to terminal doesn't work on MS-Windows.
Solution:   Send CTRL-D to mark the end of the text. (Yasuhiro Matsumoto,
            closes #2043) Add the "eof_chars" option.
diff --git a/src/structs.h b/src/structs.h
index 4030f6d..20b7ef8 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -1713,7 +1713,8 @@
 #define JO2_CURWIN	    0x0200	/* "curwin" */
 #define JO2_HIDDEN	    0x0400	/* "hidden" */
 #define JO2_TERM_OPENCMD    0x0800	/* "term_opencmd" */
-#define JO2_ALL		    0x0FFF
+#define JO2_EOF_CHARS	    0x1000	/* "eof_chars" */
+#define JO2_ALL		    0x1FFF
 
 #define JO_MODE_ALL	(JO_MODE + JO_IN_MODE + JO_OUT_MODE + JO_ERR_MODE)
 #define JO_CB_ALL \
@@ -1779,6 +1780,9 @@
     char_u	*jo_term_name;
     char_u	*jo_term_opencmd;
     int		jo_term_finish;
+# ifdef WIN3264
+    char_u	*jo_eof_chars;
+# endif
 #endif
 } jobopt_T;