Initial upstream commit

The history contained unlicensed code so everything got squashed, sorry.

Change-Id: Ie1335ecfcee7f740bb6de2e9887606be30a2deff
Signed-off-by: Nico Huber <nico.huber@secunet.com>
diff --git a/Makefile.inc b/Makefile.inc
new file mode 100644
index 0000000..d4fac0b
--- /dev/null
+++ b/Makefile.inc
@@ -0,0 +1,2 @@
+subdirs-y += ada common proof
+subdirs-y += debug