V10

2022/04/20 V10 :
> fix issue "Still rare CRC errors on upload (about 1 file on 9000 randomly) #19 ":
replace the preallocate buffer by an ontime allocation + use the transfer buffer as internal's file buffer (setvbuf)
> multi transfers enhancement : double TRANSFER_BUFFER_SIZE for upload and lower the buffer used for download to the min
+final tweaks on threads priorities to maximize the number of connections opened simultaneously on the 3 cores
> update crcChecker.py to V2-2 :
- fix answer "no" not taken into account when choosing to not use an report that already exists in the script's folder
- add a try catch for permissions errors
- fix failure when root = folder to check
> move IOSUHAX_FSA_ChangeMode() call in the transfer thread (for uploads)
> fix issue "Folder left after deletetion #18"
> fix "Crash when exiting if no connections were opened #20"