Add a short note on how to build.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3260 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/tests/kits/net/new_stack/BUILD

@@ -0,0 +1,18 @@
+Jampfiles should replace these BeIDE projects files in the future.
+But, beware:
+- the net_server binary should symlinked as _APP_ in each sub-drectories, so that
+  each module can find the kernel module API exported in this app.
+- the net_server will try to load the modules from a local add-ons folder, which should
+  be build by hand today: symlink each module like this:
+
+  net_server
+  add-ons\
+    generic\
+      memory_pool -> ../../memory_pool/memory_pool
+    network\
+      stack -> ../../stack/stack
+      protocols\
+      interfaces\
+        ethernet -> ../../../ethernet/ethernet
+        loopback -> ../../../loopback/loopback
+