Update testsuite; fix conversion errors (#1502)

The interpreter and wasm2c were incorrectly handling some float-to-int
conversions. For clarity, the wasm2c implementations of these
conversions now matches the implementation in interp-math.h more closely
(e.g. the numeric ranges are written as `x >= min && x <= max` in both
cases).

Quite a few wasm2c tests were previously being skipped, since wasm2c
doesn't currently support multi-value; it's better instead to duplicate
the tests here and disable the parts that are not supported so we don't
lose test coverage.

0 files changed, 0 insertions, 0 deletions