Set default javac target to 1.6.
Set default javac target to 1.6.

As it was before I borked it.

NathanSweet/libgdx,alex-dorokhov/libgdx,Zomby2D/libgdx,tommyettinger/libgdx,Zomby2D/libgdx,Zomby2D/libgdx,NathanSweet/libgdx,alex-dorokhov/libgdx,Zomby2D/libgdx,libgdx/libgdx,alex-dorokhov/libgdx,stinsonga/libgdx,alex-dorokhov/libgdx,bladecoder/libgdx,cypherdare/libgdx,tommyettinger/libgdx,cypherdare/libgdx,alex-dorokhov/libgdx,cypherdare/libgdx,alex-dorokhov/libgdx,stinsonga/libgdx,stinsonga/libgdx,NathanSweet/libgdx,NathanSweet/libgdx,tommyettinger/libgdx,stinsonga/libgdx,libgdx/libgdx,Zomby2D/libgdx,libgdx/libgdx,stinsonga/libgdx,alex-dorokhov/libgdx,NathanSweet/libgdx,bladecoder/libgdx,cypherdare/libgdx,tommyettinger/libgdx,tommyettinger/libgdx,libgdx/libgdx,libgdx/libgdx,cypherdare/libgdx,bladecoder/libgdx,bladecoder/libgdx,alex-dorokhov/libgdx,bladecoder/libgdx