After having spent a few hours, I managed to make the SP
portion of Raven Software's Return to Castle Wolfenstein to
be compiled in a more recent integrated development environement,
such as Microsoft Visual Studio 2012.
The link to the fixed solution is available in the tutorial
section of RTCW, or at my GitHub repository, which can be
found at this link.
I do sincerely hope that this will help several programmers /
modification authors who were looking for an easier way
to work with code for this game.