[all] fixes for windows

haxetool/system.js

@@ -0,0 +1,27 @@
+const os = require('os');
+
+class System {
+
+    static get isWindows() {
+        return os.type() === 'Windows_NT';
+    }
+
+    static get isLinux() {
+        return os.type() === 'Linux';
+    }
+
+    static get archInt() {
+        if (os.arch() === 'ia32') return 32;
+        if (os.arch() === 'x64') return 64;
+    }
+
+    static get isArch32() {
+        return this.archInt === 32;
+    }
+
+    static get isArch64() {
+        return this.archInt === 64;
+    }
+}
+
+module.exports = System;