Op.DELEGATECALL accept incorrect number of arguments

[winsvega]

check STATICCALL as well

it looks like I can legitimately write Op.DELEGATECALL( gas, addr, value, x, y, a, b)
and don't notice that it actually should be Op.DELEGATECALL( gas, addr, x, y, a, b)

[winsvega]

so here are the suggestions

Op.CALL()   empty constructor  that assumes tester preares the stack.  and the arguments constructor requires strictly. 
Op.CALL_UNSAFE(...)    the current version of OPCODE 
``

[marioevz]

It seems like adding a parameter called unsafe does the trick, like this:

Op.TSTORE(0, unsafe=True)

I have a branch to test this and surprisingly it does not break almost any tests, but it highlighted some potential test errors that I'm taking a look into, so enforcing this seems like a good idea so this does not happen again.