Increase long press timeout to 1500ms

Since 1500ms is the longest long press timeout that Android 4.1
(CM10) normally allows, I'll try that here and see if it suffices.
1000ms definitely won't (based on what I witnessed in person of
my problematic user's approach to using an iPhone & iPad).

My gut feeling is that 1500ms won't be enough, but I think I'll
give sanity a chance first.

core/java/android/view/ViewConfiguration.java

@@ -55,7 +55,7 @@ public class ViewConfiguration {
      * Defines the duration in milliseconds before a press turns into
      * a long press
      */
-    private static final int LONG_PRESS_TIMEOUT = 500;
+    private static final int LONG_PRESS_TIMEOUT = 1500;
 
     /**
      * Defines the duration in milliseconds a user needs to hold down the