src/work/Doxyfile: Minor changes

* include \internal documentation
* input whole directories: marci, alpar, deba, klao
* sync to doc/Doxyfile

 BINARIES = simann_demo

 INCLUDEDIRS= -I. -I.. -I../.. -I../{marci,jacint,alpar,johanna,athos,akos}

 include ../makefile