Clean-up and improve error management of unbuild command

Author: piranna

scripts/BigRedButton

@@ -34,7 +34,7 @@ npm run build -- -M raspi2 && npm test -- -M raspi2 || exit 12
 STEP_DIR=$PREBUILD
 
 mkdir -p prebuilds                          &&
-tar -cf - ${PRODUCTS[@]} | gzip > $PREBUILD || err 20
+tar -cf - ${PRODUCTS[@]} | gzip > $STEP_DIR || err 20
 
 
 #

scripts/unbuild

@@ -1,6 +1,8 @@
 #!/usr/bin/env sh
 
-rm -rf build/ deps/
-rm -rf bin/ lib/ libexec/ share/ *-nodeos-linux-musl*
+PRODUCTS=(bin lib libexec share *-nodeos-linux-musl*)
 
-npm run prepublish -- --force
+rm -rf build/ deps/   || exit 1
+rm -rf ${PRODUCTS[@]} || exit 2
+
+npm run prepublish -- --force || exit 10