New test function for marker types and sizes for regular line plots.

New test that shows the flaws in the present size translation for regular line plots. (NB; I replaced my files with the most up to date code earlier today, so the test is performed with the code as it is in @nschloe 's master brancho per now.)

![acid_page_1](https://f.cloud.github.com/assets/380049/2346464/30136576-a542-11e3-9018-7f5ec88a057d.png)