scripts/stat: Fix output

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Add a script: anonymize.py: Used to trash a document without changing its effect on the indexation

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
Rename anonymize.py into obfuscate.py : it's a better description of what it does

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
obfuscate.py: cosmetic: improve doc

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
obfuscate.py: cosmetic: usage

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
obfuscate.py: cosmetic: clarify the warning(s) in the usage text

Signed-off-by: Jerome Flesch <jflesch@gmail.com>
scripts/obfuscate.py : Make the output safe by using the hash function sha512 to obfuscate every word

Signed-off-by: Jerome Flesch <jflesch@gmail.com>