Refactor PutFile streaming to not use associated objects

[joeljfischer]

Associated objects should only be used as a last resort, when modifying a system framework with new properties is really the only option. With PutFile streaming I don't believe we're at that point, this code could be refactored to be cleaner and less fragile. I have also seen situations where this code does not seem to work at all, and an alternate method to PutFile had to be used.

[hugh22]

I have seen many situations where it works fine every time actually and is not fragile at all. But w/e.

[joeljfischer]

I haven't tested extensively, so I would need to verify for myself. I've only heard it from one third-party I worked with. Generally I try to avoid runtime manipulations, but if it works fine then it would be low on the priority list.

[adein]

@joeljfischer Do we want to use this issue for the putfile streaming changes that are incoming (alignment with Android methodology), or create a new one?

[joeljfischer]

I would just create a new one that's specific to the changes requested, and reference this issue. If the PR fixes both issues then it would just mark that it fixes both.

[joeljfischer]

This can be closed once #298 ships