rdl: resurrect the rdl test suite

The rdl test app was the only ngrm test that was not moved to
flux-core.  This change fixes the build and operation of the trdl
test.
Merge pull request #10 from lipari/rdl_test_fix

rdl: resurrect the rdl test suite
Created t dir and added shareness.sh and shareness.d/flux-sharness.sh from flux-core/t
Add check dependecy into the build system and add two simple test cases
add check rule
add the sched directory to the module search path
add the first under flux scheduler test
add a usage comment
Merge pull request #11 from dongahn/master

Initial automated testing harness for flux-sched
Add flux-module remove, load-after-remove test; Add a load failure case whereby flux-module returns no error
marked two known breakages with test_expect_failure
Merge pull request #12 from dongahn/master

Add flux-module remove, load-after-remove test, etc