Updated method of testing generate_test_runner script to be a FUNCTIONAL test instead of a perfect code match. Backfilled most tests and added some coverage not previously present. Still need to test new command line args and a few cmock details.

test/targets/gcc_32.yml

@@ -15,6 +15,7 @@ compiler:
     items:
       - 'src/'
       - '../src/'
+      - 'testdata/'
       - *unit_tests_path
   defines:
     prefix: '-D'