patch 8.0.0467: using g< after :for does not show the right output

Problem:    Using g< after :for does not show the right output. (Marcin
            Szamotulski)
Solution:   Call msg_sb_eol() in :echomsg.

Author: brammool

src/eval.c

@@ -8319,6 +8319,15 @@ ex_execute(exarg_T *eap)
 
     if (ret != FAIL && ga.ga_data != NULL)
     {
+	if (eap->cmdidx == CMD_echomsg || eap->cmdidx == CMD_echoerr)
+	{
+	    /* Mark the already saved text as finishing the line, so that what
+	     * follows is displayed on a new line when scrolling back at the
+	     * more prompt. */
+	    msg_sb_eol();
+	    msg_start();
+	}
+
 	if (eap->cmdidx == CMD_echomsg)
 	{
 	    MSG_ATTR(ga.ga_data, echo_attr);

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    467,
 /**/
     466,
 /**/