Caldav: experimental davmail.ignoreNoneMatchStar to let DavMail overwrite...

Caldav: experimental davmail.ignoreNoneMatchStar to let DavMail overwrite existing event automatically processed by Exchange.

git-svn-id: https://svn.code.sf.net/p/davmail/code/trunk@2496 3d1905a2-6b24-0410-a738-b14d5a86fcbd

src/java/davmail/exchange/ews/EwsExchangeSession.java

@@ -1567,7 +1567,7 @@ public class EwsExchangeSession extends ExchangeSession {
                 currentEtag = currentItem.get(Field.get("etag").getResponseName());
                 LOGGER.debug("Existing item found with etag: " + currentEtag + " client etag: " + etag + " id: " + currentItemId.id);
             }
-            if ("*".equals(noneMatch)) {
+            if ("*".equals(noneMatch) && !Settings.getBooleanProperty("davmail.ignoreNoneMatchStar", true)) {
                 // create requested
                 //noinspection VariableNotUsedInsideIf
                 if (currentItemId != null) {