* Merge remaining stuff from the nix-make branch.

* Add support for the creation of shared libraries to `compileC',
  `link', and `makeLibrary'.
* Enable the ATerm library to be made into a shared library.

make/lib/link.sh

@@ -0,0 +1,21 @@
+. $stdenv/setup
+
+shopt -s nullglob
+
+objs=
+for i in $objects; do
+    obj=$(echo $i/*.o)
+    objs="$objs $obj"
+done
+
+libs=
+for i in $libraries; do
+    lib=$(echo $i/*.a; echo $i/*.so)
+    name=$(echo $(basename $lib) | sed -e 's/^lib//' -e 's/.a$//' -e 's/.so$//')
+    libs="$libs -L$(dirname $lib) -l$name" 
+done
+
+echo "linking object files into \`$programName'..."
+
+mkdir $out
+gcc -o $out/$programName $objs $libs