Encryption of the admin passwords with the new cryptographic function and increase the size of the password field type in database

Define the new cryptographic function for encrypting the user passwords:... a variation of the SHA-512 with salting and stretching as used in the Unix systems.  The password of the default administrator is now encrypted with this new algorithm. Change the password type (varchar(32) to varchar(123)) in the user table for each customer's SQL domain. The list of available SQL domains are directly get in the st_domain table of the Silverpeas database