test_bitmap_clear
ret = test_bitmap_clear("clear all run 1", bitmap, eb, 0, 0,
ret = test_bitmap_clear("clear all run 2", bitmap, eb, 0, 0,
ret = test_bitmap_clear("same byte partial clear", bitmap, eb, 0, 4, 1);
ret = test_bitmap_clear("cross byte clear", bitmap, eb, 2, 6, 4);
ret = test_bitmap_clear("cross multi byte clear", bitmap, eb, 4, 6, 20);
ret = test_bitmap_clear("cross page clear", bitmap, eb,
ret = test_bitmap_clear("clear all run 3", bitmap, eb, 0, 0,