fix uninitialised memory
classlist does not return class names starting with C
Merge pull request #1281 from karlnapf/develop

unit tests green again
Several fixes to "make check-examples":

* fixed "make check-examples": now works without need for run "make install" first
** check-examples now passes library/include paths from source tree instead of target paths
** Added new makefile variable ABSCONFIGPATH with absolute config path

* Fixed check-examples-cmdline_static to run from inside eclipse
** PATH and LD_LIBRARY_PATH now point to source directory instead of target directory
Cleanup: Just a moved make target.
Added make targets for building "r_static" and "python_modular" libraries in interfaces directory.
Cleanup: Grouped run-testsuite/check-examples
Fixed "check-examples" for other interfaces, too.

checked and working: python_{static,modular}, octave_{static,modular},
cmdline_static, r_static, java_modular, lua_modular

checked and not working: r_modular, perl_modular

not checked (missing dependencies): ruby_modular, csharp_modular