Updating: improving Algorianim
Updating: improving INT2PROGINATS
Updating: static/extern function names are now stamp-followed.
Updating: fixing typo
Updating: a minor fix
Updating: improving contrib/SDL2
Updating: S2Ewth -> S2Ewthtype
Updating: improving SDL2; adding SDL2_image
Updating: improving SDL2 and SDL2_image
Updating: improving SDL2 and SDL2_image
Updating: improving INT2PROGINATS
Updating: improving INT2PROGINATS
Updating: improving INT2PROGINATS
Merge remote-tracking branch 'upstream/master' into gurobi_addvars