autobuild: Add a 'make clean' step.

diff --git a/autobuild.sh b/autobuild.sh
index efea8b3..77068c8 100755 (executable)
--- a/autobuild.sh
+++ b/autobuild.sh
@@ -58,6 +58,8 @@ gitsha=$(git log|head -1|awk '{print $2}')
     exit 1
 }
 
+make clean ||:
+
 # Do the build step.
 make || {
     failed "build step"