Normalize case in many TBA script commands.

Since circle/tba is not case-sensitive, this should be a non-change.
I confirmed this by verifying that `diff -i` shows zero changes.

So, to tba, this is just a cosmetic cleanup.

However, to others that use this data, the case might be important.
...this includes my own separate MUD codebase. :)

lib/world/trg/115.trg

@@ -4,7 +4,7 @@ Man Trigger~
 ~
 if %actor.is_pc%
   wait 5
-  Say "Run, Run, Fast, Fast, Get Out Of Here !! "
+  say "Run, Run, Fast, Fast, Get Out Of Here !! "
 end
 ~
 $~