Enable retrieval of avatar file name through session.

src/session.cpp

@@ -390,3 +390,11 @@ unsigned Session::getClientCurrentGameId() const
 	return id;
 }
 
+bool Session::getAvatarFile(const MD5Buf &avatarMD5, std::string &fileName)
+{
+	bool retVal = false;
+	if (myAvatarManager.get())
+		retVal = myAvatarManager->GetAvatarFileName(avatarMD5, fileName);
+	return retVal;
+}
+

src/session.h

@@ -24,6 +24,7 @@
 #include "game_defs.h"
 #include <string>
 #include <boost/shared_ptr.hpp>
+#include <core/crypthelper.h>
 
 class GuiInterface;
 class Game;
@@ -84,6 +85,8 @@ public:
 	ServerStats getClientStats() const;
 	unsigned getClientCurrentGameId() const;
 
+	bool getAvatarFile(const MD5Buf &avatarMD5, std::string &fileName);
+
 private:
 
 	int currentGameNum;