Describe Nico's script for gcc interception. Patch by Nico Weber.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45222 91177308-0d34-0410-b5e6-96231b3b80d8

www/get_involved.html

@@ -67,12 +67,16 @@ verify that one of these isn't already completed. :)</p>
 the clang type checker and verifier is quite close to complete (but not bug
 free!) for C and Objective C.  We appreciate all reports of code that is
 rejected by the front-end, and if you notice invalid code that is not rejected
-by clang, that is also very important to us.</li>
+by clang, that is also very important to us.  For make-based projects,
+<a href="http://lists.cs.uiuc.edu/pipermail/cfe-dev/2007-December/000613.html">
+the script attached to this post</a> might help to get you started.</li>
 
 <li><b>Compile your favorite C project with "clang -emit-llvm"</b>:
 The clang to LLVM converter is getting more mature, so you may be able to
-compile it.  If not, please let us know.  Once it compiles it should run.  If
+compile it.  If not, please let us know.  Again,
-not, that's a bug :)</li>
+<a href="http://lists.cs.uiuc.edu/pipermail/cfe-dev/2007-December/000613.html">
+the attachment to this post</a> might help you.  Once it compiles it should
+run.  If not, that's a bug :)</li>
 
 <li><b>Work on code generation for Objective C</b>: -emit-llvm support for
 Objective C is basically nonexistent at the time of this writing, this is a