Java source unbuildable in 1.7+

[GoogleCodeExporter]

Using mvn install with a JDK >= 1.7 fails with the error:
[ERROR] * @author Thomas �hl�n, thahlen@gmail.com
[ERROR] ^
[ERROR] 
/home/scott/Desktop/poly2tri.java/poly2tri-core/src/main/java/org/poly2tri/trian
gulation/TriangulationUtil.java:34: error: unmappable character for encoding 
UTF-8

This error occurs for almost every Java source file.
Files in question appear to be encoded as ISO-8859-1, which is not supported in 
Java 1.7.

Original issue reported on code.google.com by TheF...@gmail.com on 21 Oct 2014 at 7:52