Slightly delay opening of files specified on the commandline

Instead of opening up files during argument processing, the filenames
are now stored in a list and opened only after all commandline arguments
have been processed.

This commit in itself shouldn't change any behaviour, but it prepares
for improved error reporting in the next commits.

app/src/processing/app/Base.java

@@ -325,6 +325,8 @@ public class Base {
     String selectBoard = null;
     String selectPort = null;
     String currentDirectory = System.getProperty("user.dir");
+    List<String> filenames = new LinkedList<String>();
+
     // Check if any files were passed in on the command line
     for (int i = 0; i < args.length; i++) {
       if (args[i].equals("--upload")) {
@@ -360,14 +362,17 @@ public class Base {
       if (args[i].startsWith("--"))
         showError(null, I18n.format(_("unknown option: {0}"), args[i]), null);
 
-      String path = args[i];
+      filenames.add(args[i]);
+    }
+
+    for (String path: filenames) {
       // Fix a problem with systems that use a non-ASCII languages. Paths are
       // being passed in with 8.3 syntax, which makes the sketch loader code
       // unhappy, since the sketch folder naming doesn't match up correctly.
       // http://dev.processing.org/bugs/show_bug.cgi?id=1089
       if (isWindows()) {
         try {
-          File file = new File(args[i]);
+          File file = new File(path);
           path = file.getCanonicalPath();
         } catch (IOException e) {
           e.printStackTrace();