Rework OS fingerprinting to match Recog changes

This commit changes how os_name and os_flavor are handled
for client-side exploits, matching recent changes to the
server-side exploits and scanner fingerprints.

This commit also updates the client-side fingerprinting to
take into account Windows 8.1 and IE 9, 10, and 11.

modules/exploits/android/browser/webview_addjavascriptinterface.rb

@@ -66,8 +66,8 @@ class Metasploit3 < Msf::Exploit::Remote
       'DefaultTarget'  => 0,
       'BrowserRequirements' => {
         :source  => 'script',
-        :os_flavor  => "Android",
-        :arch       => ARCH_ARMLE
+        :os_name => /^Android/,
+        :arch    => ARCH_ARMLE
       }
     ))
   end