Add browser detection for Linux ppc64 and NetBSD

Author: brson

_includes/rustup.js

@@ -15,10 +15,13 @@ function detect_platform() {
     if (navigator.platform == "Linux aarch64") {os = "unix";}
     if (navigator.platform == "Linux armv6l") {os = "unix";}
     if (navigator.platform == "Linux armv7l") {os = "unix";}
+    if (navigator.platform == "Linux ppc64") {os = "unix";}
     if (navigator.platform == "Mac") {os = "unix";}
     if (navigator.platform == "Win32") {os = "win";}
     if (navigator.platform == "FreeBSD x86_64") {os = "unix";}
     if (navigator.platform == "FreeBSD amd64") {os = "unix";}
+    if (navigator.platform == "NetBSD x86_64") {os = "unix";}
+    if (navigator.platform == "NetBSD amd64") {os = "unix";}
 
     if (navigator.platform == "Linux armv7l"
         && navigator.appVersion.indexOf("Android") != -1 ) {