Fix headers for MUSL compatibility
Fix headers for MUSL compatibility

The MUSL headers generally don't like being included as <sys/foo.h>
when the preferred means is <foo.h> (example: time.h) and will
complain loudly when this happens.  It's unnecessary noise, and it
potentially draws attention from real warnings that might otherwise
be overlooked.

Signed-off-by: Philip Prindeville <7aa2b466eef8222f66a6ce3eb05355785a4c9dc5@redfish-solutions.com>

mickeyouyou/beanstalkd,kr/beanstalkd,ifduyue/beanstalkd,mickeyouyou/beanstalkd,kr/beanstalkd,ifduyue/beanstalkd