set.
(lsftp_nullcb): Init free_a to false.
(lsftp_do_stat): Explicitly clear free_a.
(lsftp_do_chown): Set free_a.
(lsftp_do_chmod): dito.
(lsftp_handle_chall): Respect free_a.

* sftp_bind.h (struct lsftp_callback): New flag, free_a.

* buffer.h: If available, include <stdint.h> and <inttypes.h>.

* sftp_c.h: Dito.

* configure.ac: Also check for stdint.h.

Rev: src/sftp/ChangeLog:1.47
Rev: src/sftp/buffer.h:1.11
Rev: src/sftp/configure.ac:1.17
Rev: src/sftp/sftp_bind.c:1.14
Rev: src/sftp/sftp_bind.h:1.8
Rev: src/sftp/sftp_c.h:1.5