Use .wat instead of .wasm in tree

[sffc]

Fixes #5194

[sffc]

The nice thing about the .wat is that you can see what it imports and exports. In this case, we have no imports and the only exports are ICU4C symbols and the symbols we created:

  (table (;0;) 1 1 funcref)
  (memory (;0;) 2)
  (global (;0;) (mut i32) (i32.const 67088))
  (export "memory" (memory 0))
  (export "_initialize" (func 1))
  (export "ucptrie_close" (func 13))
  (export "umutablecptrie_open" (func 14))
  (export "umutablecptrie_close" (func 26))
  (export "umutablecptrie_set" (func 27))
  (export "umutablecptrie_buildImmutable" (func 33))
  (export "create_uerrorcode" (func 77))
  (export "read_uerrorcode" (func 78))
  (export "read_ucptrie_highStart" (func 79))
  (export "read_ucptrie_shifted12HighStart" (func 80))
  (export "read_ucptrie_index3NullOffset" (func 81))
  (export "read_ucptrie_dataNullOffset" (func 82))
  (export "read_ucptrie_nullValue" (func 83))
  (export "get_index_ptr" (func 84))
  (export "get_index_length" (func 85))
  (export "get_data_ptr" (func 86))
  (export "get_data_length" (func 87))
  (data (;0;) (i32.const 1024) "\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00"))

[Manishearth]

To fix the linked issue this should be checked by CI, yes?

[Manishearth]

Oh I see the plan. That works. Asserting that it is the same is going to be very brittle anyway.