Update wx to 3.1.0 (#2641)

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

@@ -35,17 +35,24 @@ class Wx(Package):
        rather than emulating the GUI. It's also extensive, free,
        open-source and mature."""
     homepage = "http://www.wxwidgets.org/"
+    url      = "https://github.com/wxWidgets/wxWidgets/releases/download/v3.1.0/wxWidgets-3.1.0.tar.bz2"
 
-    version('2.8.12', '2fa39da14bc06ea86fe902579fedc5b1',
-            url="https://sourceforge.net/projects/wxwindows/files/2.8.12/wxWidgets-2.8.12.tar.gz")
-    version('3.0.1', 'dad1f1cd9d4c370cbc22700dc492da31',
-            url="https://sourceforge.net/projects/wxwindows/files/3.0.1/wxWidgets-3.0.1.tar.bz2")
+    version('3.1.0', '2170839cfa9d9322e8ee8368b21a15a2497b4f11')
+    version('3.0.2', '6461eab4428c0a8b9e41781b8787510484dea800')
+    version('3.0.1', '73e58521d6871c9f4d1e7974c6e3a81629fddcf8')
 
     depends_on('gtkplus')
 
+    def make_wx(self):
+        make()
+
+    @when('@:3.0.2')
+    def make_wx(self):
+        make(parallel=False)
+
     def install(self, spec, prefix):
         configure("--prefix=%s" % prefix, "--enable-unicode",
                   "--disable-precomp-headers")
 
-        make(parallel=False)
+        self.make_wx()
         make("install")