OS/X does not have CLOCK_MONOTONIC, use CLOCK_REALTIME and hope nobody steps the clock...
OS/X does not have CLOCK_MONOTONIC, use CLOCK_REALTIME and hope nobody
steps the clock...

Fixes	#1022

1HLtd/Varnish-Cache,varnish/Varnish-Cache,gquintard/Varnish-Cache,1HLtd/Varnish-Cache,feld/Varnish-Cache,drwilco/varnish-cache-drwilco,drwilco/varnish-cache-drwilco,ambernetas/varnish-cache,chrismoulton/Varnish-Cache,ajasty-cavium/Varnish-Cache,zhoualbeart/Varnish-Cache,franciscovg/Varnish-Cache,gauthier-delacroix/Varnish-Cache,ajasty-cavium/Varnish-Cache,gquintard/Varnish-Cache,franciscovg/Varnish-Cache,feld/Varnish-Cache,feld/Varnish-Cache,ajasty-cavium/Varnish-Cache,varnish/Varnish-Cache,gauthier-delacroix/Varnish-Cache,feld/Varnish-Cache,mrhmouse/Varnish-Cache,chrismoulton/Varnish-Cache,ambernetas/varnish-cache,alarky/varnish-cache-doc-ja,ambernetas/varnish-cache,franciscovg/Varnish-Cache,ajasty-cavium/Varnish-Cache,alarky/varnish-cache-doc-ja,alarky/varnish-cache-doc-ja,zhoualbeart/Varnish-Cache,gauthier-delacroix/Varnish-Cache,zhoualbeart/Varnish-Cache,gauthier-delacroix/Varnish-Cache,zhoualbeart/Varnish-Cache,mrhmouse/Varnish-Cache,chrismoulton/Varnish-Cache,chrismoulton/Varnish-Cache,mrhmouse/Varnish-Cache,gauthier-delacroix/Varnish-Cache,chrismoulton/Varnish-Cache,gquintard/Varnish-Cache,feld/Varnish-Cache,franciscovg/Varnish-Cache,varnish/Varnish-Cache,varnish/Varnish-Cache,franciscovg/Varnish-Cache,alarky/varnish-cache-doc-ja,mrhmouse/Varnish-Cache,gquintard/Varnish-Cache,mrhmouse/Varnish-Cache,1HLtd/Varnish-Cache,drwilco/varnish-cache-drwilco,alarky/varnish-cache-doc-ja,zhoualbeart/Varnish-Cache,ajasty-cavium/Varnish-Cache,1HLtd/Varnish-Cache,varnish/Varnish-Cache