make fails to remake bin/print when included header files change

[syclik]

Reported by @ksvanhorn on stan-dev/stan#572

For example, modifying src/stan/mcmc/chains.hpp and then running make bin/print does not cause bin/print to be remade, even though it includes chains.hpp.

[betanalpha]

Should line 98 of the makefile be

bin/%.d : src/%.cpp stan/src/*.cpp?

[syclik]

This should be fixed now. And we're doing another overhaul of the makefile stuff, so I'll close this issue for now.