[Cin] cpu debug patch for Andrea

[Andrea paz]

Thank you for your interest in an issue that's killing me!
Applied the patch; it seems to always show cpu 16. I have an 8c/16t so
it is shown fine.
I attach cpu-count.txt to show output during playback and rendering operations.
A video of the above operations can be found at the following address.
https://www.dropbox.com/s/m4bpa0y9mk55btq/cpu-test.mov?dl=0
Note that today it went better than the average I normally have: in
playback I had less freezes and in rendering I got an average of 60
fps, while normally I stay on 12 fps.
Last note: from a 10 years ago laptop with a good i7 4c/8t I switched
to an AMD 8c/16t with double the frequency. For example to compile
CinGG (with all 8 threads in Intel and with all 16 threads in AMD,
always at 100%) I went from 20 min to 5 min. Instead in playback and
rendering I don't notice big differences.
Using a rendering via handbrake or ffmpeg from command line is
extremely more efficient.
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Cinelerra Infinity - built: Jul 17 2021 09:35:48
git://git.cinelerra-gg.org/goodguy/cinelerra.git
(c) 2006-2019 Heroine Virtual Ltd. by Adam Williams
2007-2020 mods for Cinelerra-GG by W.P.Morrow aka goodguy
Cinelerra is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. There is absolutely no warranty for Cinelerra.

int MWindow::load_filenames(ArrayList<char*>*, int, int, int):
XML file /home/paz/CinGG-std-test.xml
 not from cinelerra.
filebase cpu 16 
filebase cpu 16 
filebase cpu 16 
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
filebase cpu 16 
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
filebase cpu 16 
filebase cpu 16 
FFStream::decode: avcodec_send_packet failed.
file:/home/paz/video_editing/test/tears_of_steel_1080p.webm
  err: Invalid data found when processing input
FFStream::decode: failed
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
filebase cpu 16 
filebase cpu 16 
filebase cpu 16 
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
FFMPEG::open_decoder: some stream times estimated: /home/paz/video_editing/test/tears_of_steel_1080p.webm
filebase cpu 16 
Render::render_single: Session finished.
** rendered 5084 frames in 81.337 secs, 62.505 fps