_64BIT_ARGS_SINGLE_REGISTER was always defined, breaking the x86 build
try to build packages on travis
try to build both, bundled and non-bundled versions on travis
Install kernel headers on Travis CI to build the driver

Signed-off-by: Christian Babeux <christian.babeux@0x80.ca>
Add Debug and Release build support on Travis CI

Signed-off-by: Christian Babeux <christian.babeux@0x80.ca>