allow easier package upgrades by reinitializing the database if the file is (no longer) existing

ratbox/ratbox.spec

@@ -205,7 +205,7 @@ AutoReqProv:  no
 
 %post
     #   on initial installation, create database
-    if [ $1 -eq 1 ]; then
+    if [ ! -f $RPM_INSTALL_PREFIX/var/ratbox/services.db ]; then
         $RPM_INSTALL_PREFIX/bin/sqlite \
             $RPM_INSTALL_PREFIX/var/ratbox/services.db \
             <$RPM_INSTALL_PREFIX/share/ratbox/services/schema.txt