systemtap tests status

[William Cohen]

I have added a number of tests to the systemtap test/testsuite module to 
test the basic function of running probes. These tests need to have 
systemtap installed on the system (a given). The tests also need dejagnu 
to run. So can run the tests in test/testsuite with:

runtest --tool=systemtap

Right now the test are doing the really basic checks to see if simple 
probes can be installed, whether the if-then-else works, and simple 
arithmic operations. Going to populate

Many of the tests are going to fail due to bugzilla #1212 and #1213. 
However, this is a start to make sure that systemtap works as expected.

-Will