Add missing documentation for some vcregress modes

Michael Paquier

doc/src/sgml/install-windows.sgml

@@ -436,6 +436,9 @@ $ENV{CONFIG}="Debug";
 <userinput>vcregress installcheck</userinput>
 <userinput>vcregress plcheck</userinput>
 <userinput>vcregress contribcheck</userinput>
+<userinput>vcregress ecpgcheck</userinput>
+<userinput>vcregress isolationcheck</userinput>
+<userinput>vcregress upgradecheck</userinput>
 </screen>
 
    To change the schedule used (default is parallel), append it to the

src/tools/msvc/vcregress.pl

@@ -405,6 +405,6 @@ sub usage
 {
 	print STDERR
 	  "Usage: vcregress.pl ",
-	  "<check|installcheck|plcheck|contribcheck|ecpgcheck> [schedule]\n";
+	  "<check|installcheck|plcheck|contribcheck|isolationcheck|ecpgcheck|upgradecheck> [schedule]\n";
 	exit(1);
 }