separated out the cache access part from beaglequeueindexer. this avoids having to link the pure query programs with indexing code

src/rcldb/rcldoc.cpp

@@ -43,6 +43,7 @@ namespace Rcl {
     const string Doc::keybcknd("rclbes");
     const string Doc::keyudi("rcludi");
     const string Doc::keyapptg("rclaptg");
+    const string Doc::keybght("beagleHitType");
 
     void Doc::dump(bool dotext) const
     {

src/rcldb/rcldoc.h

@@ -164,6 +164,7 @@ class Doc {
     // udi back from index. Only set by Rcl::Query::getdoc().
     static const string keyudi;
     static const string keyapptg; // apptag. Set from localfields (fsindexer)
+    static const string keybght;  // beagle hit type ("beagleHitType")
 };