Resolved possible jnidispatch.dll conflict on Windows

from: processing/processing#2239

  If there's is some other Java program installed that uses JNA and
  jnidispatch.dll happens to be in the path then JNA in Processing
  will try to load it and probably crash due to some version mismatch.

  The issue can easily be solved by setting jna.nosys to make sure JNA
  will always extract the correct native lib from it's jar and ignore
  any libs in the system path:

    -Djna.nosys=true

Fix arduino#1948

Author: cmaglie

build/windows/launcher/config.xml

@@ -32,7 +32,7 @@
     <minVersion>1.6.0</minVersion>
     <maxVersion></maxVersion>
     <jdkPreference>preferJre</jdkPreference>
-    <opt>-Xms128m -Xmx128m</opt>
+    <opt>-Djna.nosys=true -Xms128m -Xmx128m</opt>
   </jre>
   <splash>
     <file>about.bmp</file>

build/windows/launcher/config_debug.xml

@@ -32,7 +32,7 @@
     <minVersion>1.6.0</minVersion>
     <maxVersion></maxVersion>
     <jdkPreference>preferJre</jdkPreference>
-    <opt>-Xms128m -Xmx128m</opt>
+    <opt>-Djna.nosys=true -Xms128m -Xmx128m</opt>
   </jre>
   <messages>
     <startupErr>An error occurred while starting the application.</startupErr>