ac_mkbuilddir.sh did not stop if the directory specified by the user did not exist. This lead to messing up the base astaroth directory with temporary cmake files. Added -p flag to mkdir to create parent directories if necessary to avoid this

scripts/ac_mkbuilddir.sh

@@ -61,7 +61,7 @@ done
 
 echo "Creating build directory: ${BUILD_DIR}"
 
-mkdir ${BUILD_DIR}
+mkdir -p ${BUILD_DIR}
 
 cd ${BUILD_DIR}