It works great!!
For those wanting more details how.
I used ROM Toolbox to do all this.
First I ran the Mount system read/write script on Scripter. Then I opened Terminal Emulator and issued these commands to backup the file. if the keyboard doesn't show, press menu and select toggle soft keyboard.
cp gpio-keys.kl gpio-keys.kl.bak
then hit the on screen return button to get back to Rom Toolbox.
Now open Root Browser, navigate to the above directory. Long press on gpio-keys.kl file until a popup menu appears, select Open in Text Editor. Edit the file as instructed by sanixk.
Enjoy your new Home key function.
Sent from my A100 using xda premium