dir_meta_ops.cpp - changes to use connection pooling instead on one persistent connection
dir_meta_ops.h - let internal function return error code
file_handle.cpp - functionality to remove all handles by given filename
file_meta_ops.cpp - changes to use connection pooling instead on one persistent connection
file_meta_ops.h - reorder function declarations
fs_meta_ops.cpp - retun error code and use connection pooling
fs_meta_ops.h - return error code
fs_options.cpp - added option for connection string
fs_options.h - added option for connection string
local_grid_file.cpp - additional method signatures
local_grid_file.h - added additional method signatures
local_gridfs.cpp - LocalGridFS file manager
local_gridfs.h - LocalGridFS file manager
main.cpp - removing unused functions