Commit branching iscont as well as extra labels

Both these changes break spectest / nqp. So something is off.
Commit on moar-jit for the time being.
Add an implementation of objprimspec.

This add the space for the struct as a third argument.
I'd like to change the get_storage_spec signature to
make this formal so it'll work on all platforms.

rakudo build fails with this patch.
Read only word of storagespec. Doesn't work at all
Made assign invokish

Not dealing with invokishness makes for some freaky states.
Enabled iscont, disabled objprimspec. Spectests pass for me
Merge branch 'moar-jit'
Mark assertparamcheck invokish