Added tests as subtree

tests/vm/files/README.md

tests/vm/files/TODO

tests/vm/files/blockgenesistest.json

tests/vm/files/genesishashestest.json

tests/vm/files/hexencodetest.json

tests/vm/files/keyaddrtest.json

tests/vm/files/namecoin.json

tests/vm/files/rlptest.json

tests/vm/files/trietest.json

tests/vm/files/trietestnextprev.json

tests/vm/files/txtest.json

tests/vm/files/vmtests/random.json

tests/vm/files/vmtests/vmArithmeticTest.json

tests/vm/files/vmtests/vmBitwiseLogicOperationTest.json

tests/vm/files/vmtests/vmBlockInfoTest.json

tests/vm/files/vmtests/vmEnvironmentalInfoTest.json

tests/vm/files/vmtests/vmIOandFlowOperationsTest.json

tests/vm/files/vmtests/vmPushDupSwapTest.json

tests/vm/files/vmtests/vmSha3Test.json

tests/vm/files/vmtests/vmSystemOperationsTest.json