Added debugging level support. Use CCILK_DEBUG=1 to build in debug mode.
We look at the env var CCILK_DEBUG to determine the debug level at runtime.
Disable micobench_many_blocking for now in the hsbencher harness
minor: tweak make clean and  add make dist-clean
Switch git modules over to ssh protocol.  Cutter is having
problems checking out via https.  In particular, it says:

fatal: unable to access 'https://github.com/rrnewton/HSBencher.git/': SSL certificate problem: unable to get local issuer certificate
Clone of 'https://github.com/rrnewton/HSBencher.git' into submodule path 'HSBencher' failed
update cilk_tests submod
update subod
Try something new with IU setup script.  Also, make a seemingly meaningless change that actually seems to change silent failure problem.
update submod -- add expected failure
Add module add intel to the testing and benchmarking scripts
Try another hack to get module add working on cutter
update submod for stricter checking in python script
update submod
update submod
update submod
update tests
Merge branch 'concurrent_cilk' of github.com:iu-parfunc/concurrent_cilk into concurrent_cilk
minor: print compiler location
Hack set_up_cilk_iu again
Ammend to previous
Merge branch 'concurrent_cilk' into concurrent_cilk_oldstrat