initial checkin, a "language" that returns ints
added 02.int32ops
added 02.int32ops_via_funcall
grab llvm target commands to .ll (fixes tests on mac)
add runtests.sh
renumbered int32ops_via_funcall
added runtests.ss
added 04.int32ops_via_funcall
add 05.int32ops_with_let
04.int32ops_nested and 05.int32ops_with_let don't need binops in driver.c
forgot to commit this stuff to get things working on mac
re-fix testdriver for windows :)
added 06.int32.udfs
mv lang lang.0
first pass at a language with an explicit IR.  forgot to push this last night
kind of ugly code to get int32ops working
nested udfs
add runtests.py to run all tests
(let)
clean up compiler
minor change to driver.py to deal with some windows weirdness