Refine comments .ini file setup for new Standalone

Helpful comment for setting [const] section of OpenSim.ini to allow for
standalone. Correction to StandaloneCommon.ini.example as
[GridInfoServices] welcome parameter does work and is also useful for
standalones.

bin/OpenSim.ini.example

@@ -43,6 +43,11 @@
 
 
 [Const]
+    ; For a grid these will usually be the externally accessible IP/DNS
+    ; name and use default public port 8002 and default private port 8003
+    ; For a standalone this will usually be the externally accessible IP/DNS
+    ; name and use a single common port 9000
+
     ;# {BaseURL} {} {BaseURL} {"http://example.com","http://127.0.0.1"} "http://127.0.0.1"
     BaseURL = http://127.0.0.1
     

bin/config-include/StandaloneCommon.ini.example

@@ -236,8 +236,8 @@
     gridnick = "hippogrid"
 
     ; login page: optional: if it exists it will be used to tell the client to use
-    ;                       this as splash page
-    ; currently unused
+    ; this as splash page. May also be served from an external web server, e.g. for
+    ; information on a standalone
     ;welcome = ${Const|BaseURL}/welcome
 
     ; helper uri: optional: if it exists if will be used to tell the client to use