coredumper: mark as broken

It doesn't build. Bumping to latest version (1.2.1) didn't fix it. It
has no maintainers and the last time the expression was touched was in
2007.

pkgs/development/libraries/coredumper/default.nix

@@ -6,4 +6,13 @@ stdenv.mkDerivation {
     url = http://google-coredumper.googlecode.com/files/coredumper-1.1.tar.gz;
     sha256 = "1phl1zg2n17rp595dyzz9iw01gfdpsdh0l6wy2hfb5shi71h63rx";
   };
+
+  # Doesn't build:
+  #
+  # src/elfcore.c: In function 'CreatePipeline':
+  # src/elfcore.c:1424:26: error: 'CLONE_VM' undeclared (first use in this function)
+  #                           CLONE_VM|CLONE_UNTRACED|SIGCHLD, &args, 0, 0, 0);
+  #                           ^
+  # src/elfcore.c:1424:26: note: each undeclared identifier is reported only once for each function it appears in
+  meta.broken = true;
 }