Add to usage message

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@9686 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/share/xcat/tools/insptbls

@@ -41,6 +41,7 @@ if ($help) {
     print
       "The script is run on the command line to inspect the xcatdb DB2 database tables.\n";
     print  "Output indicates whether compression should be set on the table.\n";
+    print  "These must be at least one row of data in the table.\n";
     print  "Output is put in /tmp/<tablename all caps>.output. For example /tmp/SITE.out.\n";
     print "Usage:\n";
     print "\t--V - Verbose mode\n";