Added the installation files for the "Triangle" package.

var/spack/repos/builtin/packages/Triangle/package.py

@@ -0,0 +1,20 @@
+from spack import *
+
+class Triangle(Package):
+    """Triangle is a two-dimensional mesh generator and Delaunay
+       triangulator. Triangle generates exact Delaunay triangulations,
+       constrained Delaunay triangulations, conforming Delaunay
+       triangulations, Voronoi diagrams, and high-quality triangular
+       meshes."""
+
+    homepage = "http://www.cs.cmu.edu/~quake/triangle.html"
+    url      = "http://www.netlib.org/voronoi/triangle.zip"
+
+    version('1.6', '10aff8d7950f5e0e2fb6dd2e340be2c9')
+
+    def install(self, spec, prefix):
+        make()
+        mkdirp(prefix.bin)
+
+        install('triangle', prefix.bin)
+        install('showme', prefix.bin)