Bug 7111: sa-update: wrong exit code with --checkonly (does not find new versions)

git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1643877 13f79535-47bb-0310-9956-ffa450edef68
updated scores for revision 1643762 active rules added since last mass-check

git-svn-id: https://svn.apache.org/repos/asf/spamassassin/trunk@1643978 13f79535-47bb-0310-9956-ffa450edef68