Upgraded to bazel 0.6.1

Enable cpu environments so we can drop the NO_BUILD_* files!!!

Change-Id: I904612c5dcc1a1cd285e160c0836b7249ab5ce72
diff --git a/tools/BUILD b/tools/BUILD
index b8a4f1e..bab0b6e 100644
--- a/tools/BUILD
+++ b/tools/BUILD
@@ -39,3 +39,13 @@
   name = 'has_ubsan',
   values = {'define': 'have_ubsan=true'},
 )
+
+environment(name = "k8")
+environment(name = "armhf-debian")
+environment(name = "roborio")
+environment(name = "cortex-m4f")
+environment_group(
+    name = "cpus",
+    environments = [":k8", ":roborio", ":armhf-debian", ":cortex-m4f"],
+    defaults = [":k8", ":roborio", ":armhf-debian"],
+)