PeaZip 3.5.1

# BACKEND
- Updated to UPX 3.07

# CODE
- Updated Wolfgang Ehrhardt's crypto library units to latest available version

# FILE MANAGER
- Fixed: opening a password protected archive counts as password validation, so the password confirmation field inherits password field value
- Fixed: "Encrypt also file names" option is ignored for formats not supporting this feature "Encrypt also file names" flag is now remembered
- Removed -x.y version suffix from language file names so next version's updates will preserved user-selected language It is possible to select existing themes (previously loaded custom temes) with directory selection dialog