Use correct path.
Fixes for cl.
Update build files for VC
Cleaned up various makefiles and added GNUmakefiles for user contributed libraries
Build scripts for all user contributed libraries now finished. Also Windows (adlink.bat and adcomp.bat) modified to link to these libraries.
Opps forgot to clean statslib.
Added build files for contributed libraries.To use:$ make --directory=scripts/configure$ ./configure$ make$ make contrib