zookeeper: clean up sd_iprintf and sd_eprintf

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Signed-off-by: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
cluster/local: fix spurious failure 065

PROCESS_CHECK_INTERVAL is too large on my box that

_kill_sheep 0 # kill the sheep nicely but local driver failed to process event
_start_sheep 0

will be actually executed similar to

_start_sheep 0
_kill_sheep 0

Set it to 50 ms solve the failure on my box.

Signed-off-by: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
sheep: clean up #include headers

Current #include are messy duplicating #include everythere, since sheep_priv.h
already have most of system #include, it is convenient to have most common
system includes in it. Then source files in sheep/ will mostly need only
include sheep_priv.h.

Rare header files like <fcgiapp.h> aren't included in sheep_priv.h.

Signed-off-by: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>
sheep: fix a warning of shadowing global declaration

ops.c:402:20: warning: declaration of ‘log’ shadows a global declaration [-Wshadow]

Signed-off-by: Liu Yuan <namei.unix@gmail.com>
Signed-off-by: MORITA Kazutaka <morita.kazutaka@lab.ntt.co.jp>