Windows: updating launch4j to latest (3.8). An attempt to mitigate arduino#4215

Author: Federico Fissore

build/build.xml

@@ -769,17 +769,17 @@
 
   <target name="download-launch4j-windows">
     <antcall target="unzip-with-ant-task">
-      <param name="archive_file" value="windows/launch4j-3.7-win32.zip"/>
-      <param name="archive_url" value="http://downloads.sourceforge.net/project/launch4j/launch4j-3/3.7/launch4j-3.7-win32.zip"/>
+      <param name="archive_file" value="windows/launch4j-3.8-win32.zip"/>
+      <param name="archive_url" value="http://downloads.sourceforge.net/project/launch4j/launch4j-3/3.8/launch4j-3.8-win32.zip"/>
       <param name="final_folder" value="windows/launcher/launch4j"/>
       <param name="dest_folder" value="windows/launcher/"/>
     </antcall>
   </target>
 
   <target name="download-launch4j-linux">
     <antcall target="untar">
-      <param name="archive_file" value="windows/launch4j-3.7-linux.tgz"/>
-      <param name="archive_url" value="http://downloads.sourceforge.net/project/launch4j/launch4j-3/3.7/launch4j-3.7-linux.tgz"/>
+      <param name="archive_file" value="windows/launch4j-3.8-linux.tgz"/>
+      <param name="archive_url" value="http://downloads.sourceforge.net/project/launch4j/launch4j-3/3.8/launch4j-3.8-linux.tgz"/>
       <param name="final_folder" value="windows/launcher/launch4j"/>
       <param name="dest_folder" value="windows/launcher/"/>
     </antcall>

build/windows/launch4j-3.7-linux.tgz.sha

@@ -0,0 +1 @@
+97a390c10c2c6fce7cc54bee2ef8bcdd790d6dc3

build/windows/launch4j-3.7-win32.zip.sha

@@ -0,0 +1 @@
+60bb9fd94177aff5e19d8cba8da84df157ae3200