Fixed int128 div/mod. Fix WASM memory init priority.

test/unit/regression/int128.c3

@@ -0,0 +1,21 @@
+module int128_test;
+
+fn void check(uint128 a, uint128 b)
+{
+	uint128 div = a / b;
+	uint128 mod = a % b;
+	assert(div * b + mod == a);
+}
+
+fn void test_big() @test
+{
+	uint128 a = 12345678901234567890012u128;
+	uint128 b = 1234567890123456789001u128;
+	for (int i = 0; i < 10; i++)
+	{
+		for (int j = 0; j < 10; j++)
+		{
+			check(a + i, b + j);
+		}
+	}
+}