Fix quotes problem with dex and multidex

- see #731
- see #716

Author: mosabua

src/main/java/com/simpligility/maven/plugins/android/phase08preparepackage/DexMojo.java

@@ -634,7 +634,7 @@ private File generateMainDexClassesFile() throws MojoExecutionException
 
         Set< File> inputFiles = getDexInputFiles();  
         StringBuilder sb = new StringBuilder();
-        sb.append( '"' ).append( StringUtils.join( inputFiles, File.pathSeparatorChar ) ).append( '"' );
+        sb.append( StringUtils.join( inputFiles, File.pathSeparatorChar ) );
         commands.add( sb.toString() );
 
         String executable = getAndroidSdk().getMainDexClasses().getAbsolutePath();