Added test/ directory.
Added test_cal_great_circle_area.
Added test_get_length.
Added test_xyz2latlon.
Fixed order of arguments.
Added test_latlon2xyz.
Added test_is_same_point.
Added test_is_on_line.
Added test_is_same_line.
Added test_is_cross_line.
Added test_cal_great_circle_center_rect.
Added test_is_in_latlon.
Added test_is_inner.
Fixed write format.
Fixed to use iostat instead of 'err=' in read().
Merge pull request #8 from Jcuplib/add_test

Add test