tests/argument_2_has_invalid_type.go: add.

Signed-off-by: minux <minux.ma@gmail.com>
tests/argument_must_have_complex_type.go: add.

Signed-off-by: minux <minux.ma@gmail.com>
tests/complex_arguments_must_have_identical_types.go: add.

Signed-off-by: minux <minux.ma@gmail.com>
tests/complex_arguments_must_have_floating_point_type.go: add.

Signed-off-by: minux <minux.ma@gmail.com>
tests/expected_function.go: add.

Signed-off-by: minux <minux.ma@gmail.com>
Merge pull request #12 from minux/examples

为 gccgo.po 的 177 到 198 行构造范例，顺手初步翻译了一下。