Add more J solutions, clean up some stuff

Solve first 13 problems in J

Put flags at the end (so that linking order is right)

Makefile :)

Update gitignore to ignore Haskell binary

Improve the Tupfile

Solve problem 44 in C++

Work on Problem 44 some more

Start working on problem 44 in C++

Solve problem 43 in C++

Solve problem 42 in C++ (caught up with Haskell!)

Solve problem 41 in C++

Solve problem 40 in C++

Solve problem 39 in C++

Solve problem 38 in C++