New function ares_process_fds()
#875
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Add a new public function of
ares_process_fds()to work around the shortcomings ofares_process_fd()andares_process().This new function allows integrators to specify more than one file descriptor at a time in an array, with an event mask per file descriptor. It also adds a flags parameter which can be used to skip extra expensive processing if they may be calling the function multiple times before waiting on more events.
This new function is used by the event thread, and all the other functions internally call this new function simplifying the code structure.
Authored-By: Brad House (@bradh352)