/*D
   MPI_File_open - Opens a file

Synopsis:
.vb
int MPI_File_open(MPI_Comm comm, const char *filename, int amode, MPI_Info info,
                  MPI_File *fh)
.ve

Input Parameters:
+ comm - communicator (handle)
. filename - name of file to open (string)
. amode - file access mode (integer)
- info - info object (handle)

Output Parameters:
. fh - new file handle (handle)

.N ThreadSafe

.N Fortran

.N Errors
.N MPI_SUCCESS
.N MPI_ERR_ARG
.N MPI_ERR_OTHER

D*/

