[Milhouse]

Experimental newclock4 build uploaded: #0805b

Same as build #0805, but with newclock4 patches in place of newclock3. See here for details.

newclock4 additions since previous build #0803b:

• [airplay] Fix for airplay init race condition
  
• [rbp] Hardware accelerated resampling
  
• [rbp/omxplayer] When opening a stream don't try to update gui so often
  
• [ffmpeg] Speed up wtv index creation
  
• ffmpeg: Add armv6 acceleration for imdct/fft used by ac3/aac
  
• adds GetTvShowSeasons
  
• move AddSeason() public.
  
• adds GetArt function to (video) scraper, allowing art to be fetched given the video identifier.
  
• refresh season art if a new season is found that isn't recorded in the database yet. Fixes #14339
  
• REMOVEME: updated thetvdb.com scraper to support art updates
  
• [rbp] Allow ALSA to be chosen in addition to Pi sink
  
• [hifiberry] Hack: force it to be recognised as IEC958 capable to enable passthrough options
  
• Move the reference-counting of Begin and End calls from DX and GL source files into GUIFontTTF.cpp.
  
• Convert CGUIFontTTFBase::m_vertex to be managed as a std::vector.
  
• CGUIFontTTFBase::RenderCharacter can now append to arbitrary vectors of vertices rather than only CGUIFontTTFBase::m_vertex
  
• Add a cache of font glyph bounding box vertices.
  
• Lay the groundwork for hardware clipping.
  
• Increase font cache hit rate by keying on the fractional part of m_originX and m_originY *after* they have been through the graphics context's transformation
  
• Rewrite of scrolling text code.
  
• Move the application of the translation offsets into the GLES code.
  
• Rather than applying the translation offsets to the vertices, now applies them to the model view matrix from the top of the matrix stack and pushes it over to
  
• Enable hardware clipping.
  
• Move the vertex data across to a vertex buffer object just prior to drawing.
  
• Move vertex data into an OpenGL VBO when the font cache entry is populated.
  
• Switch from glDrawArrays() to glDrawElements().
  
• Improved file buffering in CArchive
  
• ffmpeg demuxer: Fix seg fault when changing channels