Version 0.651

Remove redundant files
Revert locale dependent output
Add warnings for low memory and threads

Version 0.650

Minor optimisations.
Exit status fixes.
Update and beautify information output.
Fix Android build.
Enable MD5 on Apple build.
Deprecate and remove liblrzip which was unused and at risk of bitrot.
Fix failures with compressing to STDOUT with inadequate memory.
Fix possible race conditions.
Fix memory leaks.
Fix -q to only hide progress.
Add -Q option for very quiet.