Revert "vm: fix extraneous parentheses warnings"

This reverts commit 110a905d3c71010a829b957fe0ad2674b31b2b2b.
Revert "Fix Class.getDeclaringClass bug"

This reverts commit 7e607b5f6173ced0af032bb263fced6ee9a48e2d.
Revert "vm: fix C++11 build after stdint update"

This reverts commit eae85659b1d66a7f783f6f10c7b3422d15faba51.