Windows installer: do not delete configuration on update

This commit fixes a problem in the Windows installer.
Without this patch, on update, even with "keep old configuration" set,
it only keeps the configuration in the configuration directory
structure, like bareos-fd.d/, but deletes the legacy configuration
files like bareos-fd.conf.

platforms/win32/winbareos.nsi

@@ -2080,12 +2080,19 @@ Section Uninstall
 
 ConfDeleteSkip:
   # delete config files *.conf.old and *.conf.new, ...
-  Delete "$APPDATA\${PRODUCT_NAME}\bareos-fd.conf.*"
-  Delete "$APPDATA\${PRODUCT_NAME}\bareos-sd.conf.*"
-  Delete "$APPDATA\${PRODUCT_NAME}\bareos-dir.conf.*"
-  Delete "$APPDATA\${PRODUCT_NAME}\tray-monitor.conf.*"
-  Delete "$APPDATA\${PRODUCT_NAME}\bconsole.conf.*"
-  Delete "$APPDATA\${PRODUCT_NAME}\bat.conf.*"
+  Delete "$APPDATA\${PRODUCT_NAME}\bareos-fd.conf.old"
+  Delete "$APPDATA\${PRODUCT_NAME}\bareos-sd.conf.old"
+  Delete "$APPDATA\${PRODUCT_NAME}\bareos-dir.conf.old"
+  Delete "$APPDATA\${PRODUCT_NAME}\tray-monitor.conf.old"
+  Delete "$APPDATA\${PRODUCT_NAME}\bconsole.conf.old"
+  Delete "$APPDATA\${PRODUCT_NAME}\bat.conf.old"
+
+  Delete "$APPDATA\${PRODUCT_NAME}\bareos-fd.conf.new"
+  Delete "$APPDATA\${PRODUCT_NAME}\bareos-sd.conf.new"
+  Delete "$APPDATA\${PRODUCT_NAME}\bareos-dir.conf.new"
+  Delete "$APPDATA\${PRODUCT_NAME}\tray-monitor.conf.new"
+  Delete "$APPDATA\${PRODUCT_NAME}\bconsole.conf.new"
+  Delete "$APPDATA\${PRODUCT_NAME}\bat.conf.new"
 
   Delete "$INSTDIR\${PRODUCT_NAME}.url"
   Delete "$INSTDIR\uninst.exe"