Fix #53 "Openable log window while application is active"

@jp9000
Implement log window

Also made it so that the log window position/size is saved.  Defaults to
600x500, centered to the main monitor if no configuration found.

@palana
Log system integration and callback behavior
Implement QSV preset selection via init request
Add QSV preset selection setting

Also improve string output for QSV target usages
Add localization for log window title
Add QSV preset to SEI user data
Add API calls for capture fps, bytes per second, total frames, total frames dropped and total stream time
Add global setting to open log window on launch
Merge pull request #309 from adocilesloth/master

Add API calls for capture fps, bytes per second, total frames, total frames dropped and total stream time.
Rename open log window on launch to show log window on launch

This improves consistency with the menu entry show log window, since
both perform the same action
Made a fix for certain bad directshow filters

This fix prevents the issue with certain directshow filters that do not
properly implement IPin::EnumMediaTypes.
Remove clamping of QPC values

I think this was causing more problems than it was solving, as I'm
seeing a number of weird problems after having putting this in.