add victory check to replay test in unit tests
add unit test 4, which AI wrote in github comments
redirect noninteractive ai test info from std::cout to log channel

I named the log channel "aitesting" and in three files,

playcontroller.cpp,
play_singlecontroller.cpp,
ca_testing_recruitment.cpp,

bound this to "LOG_AIT" and substituted where I saw std::cout.

This macro could be redefined to std::cout to restore previous
behavior.

Feel free to rename the channel if you don't like this name.
The reason I made this change is so that this info does not
appear when we are running noninteractive unit tests.
add wml commands 'issue_attack_command', 'issue_move_command'

This is the initial commit for these WML handlers.

The purpose of these is to provide more or less raw interfaces
to the (synchronized) implementations of attacks, moves, used
when a user clicks to make such an order, or when an ai issues
such an order.

This is useful for creating noninteractive tests, as it allows
to test the outcomes of these kinds of things without having
to figure out how to coerce an ai to do them. Sure, you can
make the same effects other ways in WML, but the point is
to test the code path that is actually used in a game.
add unit test 4 to the script
update changelog