When XCA started in 2002, there were no C++ initializers.
Drop explicit initializers from the constructors.
- Fix indentations of section declarators.
- Replace NULL by nullptr when feasible.
- Sort private section: properties first, then methods.
The password provided on the command line will be used
as automatic input of the first password dialog.
The database will be opened without requiring a password.
This results in the following bevavior:
- crl-gen works with:
o database password
o private password
o PIN
- keygen works with database password