add libev/README

libev/README

+libev is a high-performance event loop/event model with lots of features.
+(see benchmark at http://libev.schmorp.de/bench.html)
+
+
+ABOUT
+
+   Homepage: http://software.schmorp.de/pkg/libev
+   Mailinglist: libev@lists.schmorp.de
+                http://lists.schmorp.de/cgi-bin/mailman/listinfo/libev
+   Library Documentation: http://pod.tst.eu/http://cvs.schmorp.de/libev/ev.pod
+
+   Libev is modelled (very losely) after libevent and the Event perl
+   module, but is faster, scales better and is more correct, and also more
+   featureful. And also smaller. Yay.
+
+   Some of the specialties of libev not commonly found elsewhere are:
+   
+   - extensive and detailed, readable documentation (not doxygen garbage).
+   - fully supports fork, can detect fork in various ways and automatically
+     re-arms kernel mechanisms that do not support fork.
+   - highly optimised select, poll, epoll, kqueue and event ports backends.
+   - filesystem object (path) watching (with optional linux inotify support).
+   - wallclock-based times (using absolute time, cron-like).
+   - relative timers/timeouts (handle time jumps).
+   - fast intra-thread communication between multiple
+     event loops (with optional fast linux eventfd backend).
+   - extremely easy to embed.
+   - very small codebase, no bloated library.
+   - fully extensible by being able to plug into the event loop,
+     integrate other event loops, integrate other event loop users.
+   - very little memory use (small watchers, small event loop data).
+   - optional C++ interface allowing method and function callbacks
+     at no extra memory or runtime overhead.
+   - optional Perl interface with similar characteristics (capable
+     of running Glib/Gtk2 on libev, interfaces with Net::SNMP and
+     libadns).
+   - support for other languages (multiple C++ interfaces, D, Ruby,
+     Python) available from third-parties.
+
+   Examples of programs that embed libev: the EV perl module,
+   rxvt-unicode, gvpe (GNU Virtual Private Ethernet), the Deliantra MMORPG
+   server (http://www.deliantra.net/), Rubinius (a next-generation Ruby
+   VM), the Ebb web server, the Rev event toolkit.
+
+
+CONTRIBUTORS
+
+   libev was written and designed by Marc Lehmann and Emanuele Giaquinta.
+
+   The following people sent in patches or made other noteworthy
+   contributions to the design (for minor patches, see the Changes
+   file. If I forgot to include you, please shout at me, it was an
+   accident):
+
+   W.C.A. Wijngaards
+   Christopher Layne
+   Chris Brody
+