Bump to xamarin-android-tools/master/50af063b (#1562)

jonpryor · web-flow · commit efe81f565bce · 2018-04-16T20:38:59.000-04:00
Fixes: #1511 Fixes: #1512 Check `$HOME/Library/Android/sdk` for default Android SDK location. Add `AndroidSdkInfo.AllAndroidSdkPaths` property.
diff --git a/external/xamarin-android-tools b/external/xamarin-android-tools
@@ -1 +1 @@
-Subproject commit 7dc8ce8336ac26ada87f4a95a410d861ba672afa
+Subproject commit 50af063b2fdf0eda752882a4a61129e0e55c746c
