Merge pull request #10272 from devreal/mpi-info-set-const

Documentation: MPI_Info_set string arguments are const

Author: awlauria

docs/man-openmpi/man3/MPI_Info_set.3.rst

@@ -20,7 +20,7 @@ C Syntax
 
    #include <mpi.h>
 
-   int MPI_Info_set(MPI_Info info, char *key, char *value)
+   int MPI_Info_set(MPI_Info info, const char *key, const char *value)
 
 
 Fortran Syntax

docs/man-openmpi/man3/MPI_Pack_external_size.3.rst

@@ -21,7 +21,7 @@ C Syntax
 
    #include <mpi.h>
 
-   int MPI_Pack_external_size(char *datarep, int incount,
+   int MPI_Pack_external_size(const char *datarep, int incount,
    	MPI_Datatype datatype, MPI_Aint *size)