Use the libeintr wrappers instead of fopen, fclose and rename.

	status file.

	and fclose.

(init_cache, free_all_cache): Use i_fopen and i_fclose instead of
	fopen and fclose.
(pre_sync): Ditto, and i_rename instead of rename.

	fopen and fclose.

(init_cache): Use i_fopen, i_fclose and i_rename instead of fopen,
	fclose and rename.

(dump_connections): Ditto, and i_rename instead of rename.

	fopen and fclose.

(lyskomd_LDADD): Ditto.
(dbck_LDADD): Ditto.
(LDADD): Ditto.

	returns with EINTR during the Xenofarm tests.

	down spurious errors from the rename that I don't understand.

Fixed compile error on systems lacking SA_RESTART.

useful, and makes the test suite more complex.

	message.

(do_sub_recpt): Ditto.
(check_double_subm): Ditto.
(check_double_comm): Ditto.  Fix the function name in a log message.

broke when doing an srcdir build.

check" was broken: the ".c" extension was used instead of ".o" in
several cases.  This resulted in bison being run on the client.
(Bug 843).