assuan: Fix exponential decay for first second.
* common/asshelp.c (wait_for_sock): Round SECSLEFT. * dirmngr/dirmngr.c (main): Take care of --debug-wait also in dameon mode. * common/sysutils.c (gnupg_usleep) [HAVE_NANOSLEEP]: Fix nanosleep use.
Without the rounding we saw in verbose mose
[...]to come up ... (5s)
[...]to come up ... (4s)
immediately without the expected one second delay. Waiting for the
next seconds did not work if nanosleep was used due to improper passed
parameters in gnupg_usleep.
Adding --debug-wait for dirmngr in daemon mode is required to test
(cherry picked from commit 0cfdd3b57d592fb6baa7dafe8fde124e8a6c7798)