removed superfluos SYSTEM_LIBDIR in platform.mk
removed SO variable for now (for .so extesion), we don't support strange extensions for now
removed a superfluos libdir=$(execdir)/$(LIBDIR) in lua dir
removed a unused LIBDIR
..
removed PYTHON_LIBS (python-config repors libs as part of ldflags)
cleanup around LD_LIBS in lua
added dist-xy target
some more cleanup in makefiles
Merge branch 'master' of https://github.com/Wolframe/Wolframe into ModuleInterface
fixed some module interface bugs