- remove author name and email from App XML
- remove Matlab requirement from regression test. Vivado_HLS remains necessary, otherwise we can test just one function (ip_prototype_build)
- directory create durign the regression test will be removed at the end of the test if it is successful.
- add function make_rand_stimuli to generate some random test vectors in order to remove Matlab from the design flow (except for the function ip_prototype_test.tcl which is not included in the regression test because it requires a connected evaluation board)