improvements messages:

- save msgId in configuration file
- enable previous improvements read/unread state and tags

new function for creating backups of a file
bool createBackup (std::string sFilename, unsigned int nCount = 5);

currently its only available for windows compile. maybe there is a linux developer who change it for linux.


git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3064 b45a01b8-16f6-495d-af2f-9b41ad6348cc

libretroshare/src/util/rsdir.h

@@ -44,6 +44,7 @@ std::string 	removeRootDirs(std::string path, std::string root);
 // Renames file from to file to. Files should be on the same file system.
 //	returns true if succeed, false otherwise.
 bool		renameFile(const std::string& from,const std::string& to) ;
+bool		createBackup (std::string sFilename, unsigned int nCount = 5);
 
 int     	breakupDirList(std::string path,
                         	std::list<std::string> &subdirs);