Fix encoding of comments using latin1

Signed-off-by: Yann Dirson <ydirson@free.fr>
Provide a build.xml to build with ant.

This file comes from "android create project" output.

Requires to create a local.properties file, as explained in the google
tutorials.

Signed-off-by: Yann Dirson <ydirson@free.fr>
Provide a .gitignore file.

Signed-off-by: Yann Dirson <ydirson@free.fr>