Added TRACE to DllMain.

1. For Debugging purposes.
Proxy now outputs to stdout.

1. This is immediately helpful for debugging on Linux, as all Wine stuff
uses stderr and they tend to step on each other toes otherwise.
2. Added flush in LOG statements, as it seems sometimes LOG messages are
being cut off in a crash.
Updated Bridge to the new workaround API.

1. For the moment, Bridge now returns a pointer to a steamID.
Update win32 Proxy to new Bridge.

1. It doesn't work right, but as an immediate work around, the Proxy API
now returns a pointer to the steam id in GetSteamID.