Rename wast to wat

tests/compiler/assert.optimized.wat

@@ -0,0 +1,33 @@
+(module
+ (type $iiiiv (func (param i32 i32 i32 i32)))
+ (type $v (func))
+ (import "env" "abort" (func $abort (param i32 i32 i32 i32)))
+ (memory $0 1)
+ (data (i32.const 4) "\t\00\00\00a\00s\00s\00e\00r\00t\00.\00t\00s")
+ (data (i32.const 28) "\0c\00\00\00m\00u\00s\00t\00 \00b\00e\00 \00t\00r\00u\00e")
+ (export "memory" (memory $0))
+ (start $start)
+ (func $start (; 1 ;) (type $v)
+  (local $0 i32)
+  (if
+   (i32.eqz
+    (if (result i32)
+     (tee_local $0
+      (i32.const 1)
+     )
+     (get_local $0)
+     (block
+      (call $abort
+       (i32.const 28)
+       (i32.const 4)
+       (i32.const 10)
+       (i32.const 5)
+      )
+      (unreachable)
+     )
+    )
+   )
+   (unreachable)
+  )
+ )
+)