Initial commit.
bacs::single: checker and validator declaration.
bacs::single::tests declaration.
bacs::single::callback declaration.
bacs/system/single: CMakeLists.txt draft.
bacs/system/single: main() partial implementation.
bacs::single::error declaration.
bacs::single::callback: errors declaration.
bacs/system/single: XMLRPC callbacks stub.
bacs/system/single: XML-RPC dependency was added.
bacs/system/checker/call/in_out_hint stub.
bacs/system/validator/std/ok implementation.
bacs/system/driver/simple0/tests stub.
bacs::single::tests became class.
bacs/system/driver/simple0/tests stub fix.
bacs::single::validator became class.
bacs/system/validator/std/ok fix.
bacs::single::checker became class.
bacs/system/checker/call/std/strict/out_stdout implementation.
bacs/system/checker/call/in_out_hint fix.