- Added a ChunkMap class responsible for allocating new chunks to be downloaded, according to

- a given chunk strategy
	- the availablility map of each source 
- Integrated this into ftFileCreator
- added gui menu in file transfer+right click to change the chunk strategy: streaming vs. random

Next step: 
	- loading/saving file downloading state and availability map
	- displaying chunk details in the selected transfer tab (e.g. list of currently worked chunks, and their current downloading completion)



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1863 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/ft/ftserver.cc

@@ -256,6 +256,11 @@ bool ftServer::FileRequest(std::string fname, std::string hash, uint64_t size,
 	return true ;
 }
 
+bool ftServer::setChunkStrategy(const std::string& hash,FileChunksInfo::ChunkStrategy s)
+{
+	return mFtController->setChunkStrategy(hash,s);
+}
+
 bool ftServer::FileCancel(std::string hash)
 {
 	rsTurtle->stopMonitoringFileTunnels(hash) ;