general code cleanup on lbmk shell scripts

in update/blobs/download, i saw instances where
appdir was being deleted with rm -r, but the more
appropriate command would rm -Rf. this is now fixed.

other than that, i've mostly just simplified a bunch
of if statements and consolidated some duplicated
logic (e.g. if/else block for dependencies in
build_dependencies() of update/blobs/download

one or two functions and/or variables have been
renamed, for greater clarity in the code, also
removed a few messages that were redundant

used printf instead of echo, in a few places, also
fixed up the indentation in a few places

Signed-off-by: Leah Rowe <leah@libreboot.org>

resources/scripts/build/src/for

@@ -44,8 +44,8 @@ main()
 	[ -z "${project}" ] && err "project name not specified"
 	[ "${project}" = "ich9utils" ] && project="util/ich9utils"
 
-	[ -d "${project}" ] || ./fetch "${project}" \
-	    || err "Cannot download project, ${project}"
+	[ -d "${project}" ] || ./fetch "${project}" || \
+	    err "Cannot download project, ${project}"
 	[ -d "${project}" ] || err "Project, ${project}, not downloaded"
 
 	if [ "${project}" = "uefitool" ]; then