stub change to see if jenkins works
another minor change for jenkins testing
Default constructor/deconstructor
Little mistake in constructor/deconstructor names
Deleting meaninless includes
Looks like I will need a proper GLprogram class

Vao is a fragile creature which needs a program to take attribute
locations. I will leave it as it is for now and create new glprogram
class.
Test sometime failed at comparison
Renamed vao class
constructor/deconstructor rename