maintenance release for NHI10 : focus on Python integration

new performance test tool: README_PERFORMANCE The performance test has been revised and expanded. The test now uses the installed-executables and not the executables from the build-directory. The aim was to more precisely separate development and testing and thus better reproduce the results across system boundaries. A strict distinction is now made between the executables in DEVELOPMENT (NHI1_BUILD/TARGET/SETUP directory) and the executables in INSTALLATION (NHI1_HOME/performance/gen/TARGET/SETUP/inst directory).

maintenance release: The latest changes to Programming-Language-Micro-Kernel (PLMK) have been incorporated into theLink, but the code has not been changed. The Python extension has been updated and reintegrated into the build.