Add support for annotation of any given revision

- Parent commits are also accessible from Annotate context menu
- The client functionality was added in `fossil v2.4`

Change-Id: Ia6096432cb1151388b5aebca30a6d25c1c6079f4
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

plugins/fossil/revisioninfo.cpp

@@ -28,9 +28,14 @@
 namespace Fossil {
 namespace Internal {
 
-RevisionInfo::RevisionInfo(const QString &revisionId, const QString &parent) :
+RevisionInfo::RevisionInfo(const QString &revisionId, const QString &parent,
+                           const QStringList &mergeParents, const QString &comment,
+                           const QString &user) :
     id(revisionId),
-    parentId(parent)
+    parentId(parent),
+    mergeParentIds(mergeParents),
+    commentMsg(comment),
+    committer(user)
 { }
 
 } // namespace Internal