Move tests to main test suite (#1568)

Some merge-related fallout which needs to be cleaned up after we
consolidated all of the test suites into one location.

tests/all/main.rs

@@ -5,6 +5,7 @@ mod externals;
 mod func;
 mod fuzzing;
 mod globals;
+mod iloop;
 mod import_calling_export;
 mod import_indexes;
 mod instance;
@@ -12,5 +13,6 @@ mod invoke_func_via_table;
 mod linker;
 mod memory_creator;
 mod name;
+mod stack_overflow;
 mod traps;
 mod wast;