Added SaltyStats Manager.

SaltyStats Manager (statmanager) allows the user to make manual changes
to the statfile. It can add/remove characters and change win/loss
records. It can also be used to manually search through character
records and display stats. These features make it a useful tool for
tournaments and exhibitions, since SaltyStats does not display or log
information during those fights.

Note that version numbers for SaltyStats Manager are separate from
version numbers for SaltyStats.