attributes if GL version isn't 3.0 at least.

functions; also remove a lot of idiotic "using namespace std" from the
codebase.

"half" class. The build is now 3% faster.

want to normalise them to floats.

have confused the reader.

because we don't know yet how to disable them selectively.

and letting the user guess what happened. This doesn't prevent us from
displaying an additional friendly warning later.

instance object takes care of everything for us.

the NaCl instance object. Now we properly override main() and we can at
last build all the executables as NaCl binaries.

template specialisation order.

transformed to C++ but aren't compiled into the project yet.

properly detected using the generic SDL driver.

to the Tait-Bryan angles we had for now). Also, change quaternion storage
order to wxyz in order to match the constructors.