urgent need to refactor contract call and contract creation

[jangko]

for each contract/message call and contract creation, we have 3 distinct implementation:

1. in general state test
2. in processTransaction
3. in opcode impl/computation impl

This lead to confusion and hard to reason code when bugs detected.
Current problematic block 652.148, reveal this bad design clearly.
The problem itself is simple, but the solution is not simple.

We should merge those 3 distinct implementations soon, before it become too complicated.