PLYReader does not account for the newline represented as '\r\n' under Windows

[Andreas-Forster]

The PLY reader reads the header and parses it in order to construct an appropriate reader. In a second pass, the header is skipped and the actual data is read. When skipping the header the length is calculated based on the last pass. Here happens the error:

• CURRENT: All new-line representations are assumed to be represented with a length of 1. This is not true under Windows systems and hence leads to errors when parsing a PLY mesh.

• SOLUTION: Use the length of System.getProperty("line.separator") instead off assuming a length of 1.