Some harmonization of semantic checks with the C side

Change-Id: I3faaf7d2e878f969e4ecd3332d13e5e633fc9a3f
Signed-off-by: Adam Knapp <adam.knapp@sigmatechnology.se>

org.eclipse.titan.designer/src/org/eclipse/titan/designer/core/ProductIdentityHelper.java

@@ -61,7 +61,7 @@ public final class ProductIdentityHelper {
 			return null;
 		}
 
-		if ("RnXnn".equals(versionString)) {
+		if (versionString.contains("RnXnn")) {
 			return new ProductIdentity();
 		}
 
@@ -161,7 +161,7 @@ public final class ProductIdentityHelper {
 			}
 			patchVersion = temp.intValue();
 		} else {
-			if (revisionLetter.length() > 1 && majorVersion > 1) {
+			if (revisionLetter.length() > 2) {
 				reportSemanticError(location, MessageFormat
 						.format("More than one letter is not allowed as patch version: {0}", revisionLetter));
 				return null;