Update VRPN to get HDK angular velocity

rpavlik · rpavlik · commit b9670d2badd9 · 2015-08-30T22:30:19.000-05:00
diff --git a/vendor/vrpn b/vendor/vrpn
@@ -1 +1 @@
-Subproject commit bf40d3332698c37f8f3fcad811d95dfa24e38001
+Subproject commit a800b1872af7c2f7ef0d680640a545671401dee3
