Fix JNI issues.

Method System.loadLibrary doesn't need 'lib' prefix

Signed-off-by: Tiago Maluta <tiago.maluta@gmail.com>
Added widget to show usb list output

Signed-off-by: Tiago Maluta <tiago.maluta@gmail.com>
Fixed some string names

Signed-off-by: Tiago Maluta <tiago.maluta@gmail.com>
Return a list of vendor:product ids.

Signed-off-by: Tiago Maluta <tiago.maluta@gmail.com>
Layout changes

Signed-off-by: Tiago Maluta <tiago.maluta@gmail.com>