GUI: add popup menu option to copy simple file name. fix typo keytcfn->keyctfn. Change utf8check() parms for easier usage

src/rcldb/rcldb.cpp

@@ -1845,10 +1845,8 @@ bool Db::addOrUpdate(const string &udi, const string &parent_udi, Doc &doc)
         // purposes.
         const string *fnp = 0;
         if (!doc.peekmeta(Rcl::Doc::keyfn, &fnp) || fnp->empty()) {
-            if (doc.peekmeta(Rcl::Doc::keytcfn, &fnp) && !fnp->empty()) {
-                string value = 
-                    neutchars(truncate_to_word(*fnp, 
-                                               m_idxMetaStoredLen), cstr_nc);
+            if (doc.peekmeta(Rcl::Doc::keyctfn, &fnp) && !fnp->empty()) {
+                string value = neutchars(truncate_to_word(*fnp, m_idxMetaStoredLen), cstr_nc);
                 RECORD_APPEND(record, Rcl::Doc::keyfn, value);
             }
         }

src/rcldb/rcldoc.cpp

@@ -34,7 +34,7 @@ const string Doc::keydmt("dmtime");
 const string Doc::keyds("dbytes");
 const string Doc::keyfmt("fmtime");
 const string Doc::keyfn("filename");
-const string Doc::keytcfn("containerfilename");
+const string Doc::keyctfn("containerfilename");
 const string Doc::keyfs("fbytes");
 const string Doc::keyipt("ipath");
 const string Doc::keykw("keywords");

src/rcldb/rcldoc.h

@@ -233,7 +233,7 @@ public:
     // given top level container. It is not indexed by default but
     // stored in the document record keyfn field if this is still
     // empty when we create it, for display purposes.
-    static const std::string keytcfn;
+    static const std::string keyctfn;
     static const std::string keyipt; // ipath
     static const std::string keytp;  // mime type
     static const std::string keyfmt; // file mtime