/*D
   MPI_Info_get - Retrieves the value associated with a key

Synopsis:
.vb
int MPI_Info_get(MPI_Info info, const char *key, int valuelen, char *value,
                 int *flag)
.ve

Input Parameters:
+ info - info object (handle)
. key - key (string)
- valuelen - length of value arg (integer)

Output Parameters:
+ value - value (string)
- flag - true if key defined, false if not (boolean)

.N Deprecated
   'MPI_Info_get_string' should be used instead of this routine.

.N ThreadSafe

.N Fortran

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

D*/

