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/19.trg

@@ -1125,7 +1125,7 @@ end
 test load~
 2 c 100
 *~
-If %actor.name% == Detta
+if %actor.name% == Detta
 return 0
 else
 %send% %actor% An unmeasurable power holds you frozen.