* gcrypt.h (gcry_mpi_scan, gcry_mpi_print): API change. (gcry_mpi_dump): New.
* mpicoder.c (gcry_mpi_scan): New argument BUFLEN to replace the
use of the intial value of NBYTES.
(gcry_mpi_print): Likewise.
(gcry_mpi_dump): New.
(_gcry_log_mpidump): Make use of gcry_mpi_dump.
(mpi_print): Removed.
(gcry_mpi_scan): Allocated mpi in secure memory when required.
* gcrypt.texi: Adjusted description of gcry_mpi_scan and
gcry_mpi_dump. Add gcry_mpi_dump.