Code tidy and update for new PHPUnit version.

adminui/index.php

cli/ast_filter_tester.php

cli/ast_test_generator.php

cli/maximalibcheck.php

questiontestform.php

questiontestreport.php

questiontestrun.php

stack/cas/ast.container.conditional.class.php

stack/cas/castext/raw.block.php

stack/cas/connector.class.php

stack/cas/evaluatable_object.interfaces.php

...rsingrules/001_fix_call_of_a_group_or_function.filter.php

stack/cas/parsingrules/002_log_candy.filter.php

stack/cas/parsingrules/003_no_dot_dot.filter.php

stack/cas/parsingrules/005_i_is_never_a_function.filter.php

stack/cas/parsingrules/020_no_arc.filter.php

stack/cas/parsingrules/025_no_trig_power.filter.php

stack/cas/parsingrules/030_no_trig_space.filter.php

stack/cas/parsingrules/031_no_trig_brackets.filter.php

...k/cas/parsingrules/050_no_chained_inequalities.filter.php