Improve file analysis manager shutdown/cleanup.

file_analysis::Manager's dtor now doesn't assume any more analysis
progress can be made because too many of Bro's other subsystems
are shutdown by that point.  Any file analysis requests made after
Terminate cannot be reliably processed.

src/file_analysis/Manager.cc

@@ -27,7 +27,22 @@ Manager::Manager()
 
 Manager::~Manager()
 	{
-	Terminate();
+	// Have to assume that too much of Bro has been shutdown by this point
+	// to do anything more than reclaim memory.
+
+	File* f;
+	bool* b;
+
+	IterCookie* it = id_map.InitForIteration();
+
+	while ( (f = id_map.NextEntry(it)) )
+		delete f;
+
+	it = ignored.InitForIteration();
+
+	while( (b = ignored.NextEntry(it)) )
+		delete b;
+
 	delete magic_state;
 	}
 
@@ -58,10 +73,15 @@ void Manager::Terminate()
 	HashKey* key;
 
 	while ( id_map.NextEntry(key, it) )
+		{
 		keys.push_back(static_cast<const char*>(key->Key()));
+		delete key;
+		}
 
 	for ( size_t i = 0; i < keys.size(); ++i )
 		Timeout(keys[i], true);
+
+	mgr.Drain();
 	}
 
 string Manager::HashHandle(const string& handle) const