It's better not to have the full range of the axis (by 1 on the negative side) than turn 0 value into -1
Slightly more efficient to check the event type first
Removed redundant "Controller" names from gamepads, added mapping for Logitech F710 in DirectInput mode
Check for well known XInput device GUIDs before enumerating the device list.
Improved find_lib, gets the latest version of libpng, etc.
Updated configure
Fixed Android Lint warning in AndroidManifest.xml.
If targetSdkVersion not set it becomes same as minSdkVersion and causes warning.
Updated names of README files in source comments.