make necessary adjustments to support a build of gzip using a dummy toolkit...

make necessary adjustments to support a build of gzip using a dummy toolkit (i.e. using system compiler):
 * fix raising of errors
 * fix reporting for missing environment-modules
 * fix function names after refactoring in framework.application
 * fix getting Application instance
 * fix default value for toolkit
 * improve logging (and stdout output)
 * add default logFormat (so build_log testing works)