[AE/CA] - Fix optical 3fps issue. This was caused by a problem with dd-w...

...av. When falling back on systems that doesn’t provide a encoded stream it was erroneously advertising the stream as Float instead of signed integers. We know open the output as integers if we are falling back on encoded data.

Fixes a regression introduced in 12.3 and master due to the mavericks startup fix.

Waiting for feedback from the user here:

http://forum.xbmc.org/showthread.php?tid=182326&pid=1597127#pid1597127

before merging ...

@tru i guess you tested this in mavericks right? Because the commit that broke this was needed for proper startup of xbmc on mavericks - see:

https://github.com/xbmc/xbmc/commit/3fc41bf8b7e3fddf3ae6d33cf21a7eab3f799415