optional perl script to postprocess a screen-output file
use .sh to make tests/burstedde work with clang and gcc
also track dependencies for the new .sh test scripts
Merge pull request #191 from tjhei/test_py_postprocess

Optionally run <testname>.sh script to allow replacing the screen-output for more robust test comparisons. Use this method to fix tests/burstedde that gave different results between gcc and clang.