read values optionally from xml attributes in tntnet.xml when cxxtools supports it (cxxtools version >=2.3)
do not install demo applications on make install
undeprecate "global" scope and improve some error messages in ecpp parser
Added -V, -h and --help options to ecppl
Added version and help flags to ecppc, minor readabilty changes
Small update of the command line flags for tntnet,
fixed a few non-camelCase variable names, defined PollerImpl as internal for doxygen,
moved PollerImpl implementation into a seperate file (poller.cpp -> pollerimpl.cpp)
Updated wrong argument and help option handling in ecppc,
removed Usage exception class (from ecppc.h), added myself to the AUTHORS file