[Cin] Creating AppImage

[Andrea paz]

Yes, using the normal bld.sh is OK.

I understood my mistake. I had run the script in .../cinelerra-5.1/blds;
moving the script in .../cinelerra-5.1 there are no problems and the
appimage obtained works fine.

If you want to try this appimage of mine on your distros, you can
download it from:
https://drive.google.com/file/d/1cDd1yMXZL4k7dkyyHuXxQndcK5JF6weF/view?usp=sharing

Thanks!