updated for version 7.4.586

Problem:    Parallel building of the documentation html files is not reliable.
Solution:   Remove a cyclic dependency. (Reiner Herrmann)

runtime/doc/Makefile

@@ -229,7 +229,6 @@ HTMLS = \
 	starting.html \
 	syntax.html \
 	tabpage.html \
-	tags.html \
 	tagsrch.html \
 	term.html \
 	tips.html \

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    586,
 /**/
     585,
 /**/