updated for version 7.3.660

Problem:    ":help !" jumps to help for ":!".
Solution:   Adjust check for tag header line. (Andy Wokula)

src/tag.c

@@ -1797,7 +1797,7 @@ line_read_in:
 	     */
 	    if (state == TS_START)
 	    {
-		if (STRNCMP(lbuf, "!_TAG_", 6) <= 0)
+		if (STRNCMP(lbuf, "!_TAG_", 6) == 0)
 		{
 		    /*
 		     * Read header line.

src/version.c

@@ -719,6 +719,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    660,
 /**/
     659,
 /**/