- added NETWORK_WIDE flag to remote dir model download

- added file priority strategy based on which files are requested first. This provides:
	- equal file speed for files with equal (source,priority)
	- effective priority speed for file of same source but different priority
- removed state variable load/save from turtle, as it's not needed anymore (FileRequest re-opens tunnels as needed)
- manage availability per peer instead of per file type: direct peer ids always assume file availability, while turtle tunnels don't

I still need to make the download queue work, and code this gui for it.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@2133 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/ft/ftfileprovider.cc

@@ -10,6 +10,7 @@ static const time_t UPLOAD_CHUNK_MAPS_TIME = 30 ;	// time to ask for a new chunk
 ftFileProvider::ftFileProvider(std::string path, uint64_t size, std::string
 hash) : mSize(size), hash(hash), file_name(path), fd(NULL),transfer_rate(0),total_size(0)
 {
+	clients_chunk_maps.clear(); 
 #ifdef DEBUG_FT_FILE_PROVIDER
 	std::cout << "Creating file provider for " << hash << std::endl ;
 #endif