Higher-resolution time for win32

[Andy Grundman]

I noticed the libev time resolution on Win32 was only 1ms. Microsoft is of course too horrible to fix this properly, so nasty hacks have been developed. I ported the one used by Time::HiRes and it appears to work fine. I don't expect this patch is good enough, but want to at least start some discussion on the topic.

Two problems with this patch:

Not thread-safe. Time::HiRes uses Perl context to handle this, but I wasn't sure of the best way to do it in libev. The fact that time can move backwards is a bit worrying. Although Time::HiRes gets away with it!

win32_hires_time.patch
Description: Binary data

-Andy
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