Fix compiler warnings on AMD64 Linux.

Fix compiler warnings on AMD64 Linux.

src/gline.c (gline_alternate_target): Typecast format field precision
    argument.

src/helpfile.c (helpfile_eval_identifier): Likewise.
  (helpfile_eval_atomicexpr): Likewise.
  (helpfile_eval_expr): Likewise.
  (helpfile_eval_condition): Likewise.

src/log.c (log_audit): Change typecast used to make types compatible.

src/main.c (set_item_rlimit): Use long instead of int as contained value.

src/sendmail.c (send_flowed_text): Typecast format field precision
    argument.
git-archimport-id: srvx@srvx.net--2005-srvx/srvx--devo--1.3--patch-27