use a known good commit of smack to make the travis build more dependable
@@ -29,8 +29,9 @@ INSTALL_DIR=$1
cd $INSTALL_DIR
#install smack
-git clone --depth 1 https://github.com/smackers/smack.git -b develop
+git clone https://github.com/smackers/smack.git -b develop
cd smack/bin
+git checkout 45e1fc5
./build.sh
source $INSTALL_DIR/smack.environment
