Split "if looking", "if in boat", "if on horse" into separate special node types rather than filing them under "if context"

rsrc/strings/specials-opcodes.txt

@@ -143,7 +143,7 @@ if-spell-mage
 if-spell-priest
 if-alchemy
 if-status
-
+if-look
 if-day
 if-field
 if-party-size
@@ -155,8 +155,8 @@ if-response
 if-sdf-eq
 if-context
 if-num-response
-
-
+if-boat
+if-horse