With this tweak you can disable internal keymapper so you can use gamepad button as extra button.
I've started to using tincore as primary tool, that's why I made this tweak.
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How to use:
1. Download and install Xposed Installer from here:
http://forum.xda-developers.com/showthread.php?t=15744012. Install Xposed Framework with it.
3. Download S7800Modder from below.
4. Enable S7800Modder module from Xposed Installer.
5. Reboot.
6. You can change Gamepad button's behavior with S7800Modder app, no reboot is required.
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Updates:
v1.1 (2014-01-09)
You can change behavior of Gamepad button without rebooting.
You can open Tincore mapper with single click now.
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Download:
http://www.mediafire.com/download/2plchnks35koeje/S7800Modder_v1.1.apk