ScanlineConverter: fixes for gray and indexed source images
- QOI: fix wrong colors when saving an indexed image (ScanlineConverter)
- EXR: fix wrong colors when saving an indexed image (ScanlineConverter)
- EXR: right conversion when saving gray images (ScanlineConverter)
- EXR: less space used when saving gray images (as reported in the official documentation)
Edited by Mirco Miranda