patch 7.4.2286

Problem:    The tee program isn't included.  Makefile contains build
            instructions that don't work.
Solution:   Update the Filelist and build instructions. Remove build
            instructions for DOS and old Windows.  Add the tee program.

src/version.c

@@ -763,6 +763,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2286,
 /**/
     2285,
 /**/