[Milhouse]

Experimental newclock4 build uploaded: #0820b

Same as build #0820, but with newclock4 patches in place of newclock3. See here for details.

newclock4 additions since previous build #0819b:

• [omxcodec] Need to resend codec config after flushing
  
• [omxplayer] Flush clock after components
  
• [omxplayer] Remove flush on seek
  
• [omxplayer] Use 0 for video timestamps when using trickplay
  

Feedback on omxplayer while seeking/trickplay would be welcomed, as this code has changed quite a bit with the dvdplayer refactor.

Feedback on dvdplayer performance (including seeking/trickplay) would also be appreciated.