Initial import of Flemming Madsen's LibUEvent

This fork is called libuev and will focus solely on embedded Linux
systems using C.  Patches for other UNIX-like operating systems are
welcome.

- Remove Lua support, will not be used.
- Rename from LibUEvent to libuev where applicable
- Add project's MIT license to top of all files, as is customary
- Add a LICENSE file, as is customary

This MIT licensed code was cloned from the Mercurial repository at
Google http://code.google.com/p/libuevent/ which had mislabled the
license as "New BSD License", which is wrong.  The actual license
of the project is https://en.wikipedia.org/wiki/MIT_License

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

README

@@ -1,70 +0,0 @@
-LibUEvent - A Microscopic event library.
-========================================
-
-The libuevent library is a small event library in the style of the venerable
-Xt(3) event loop.
-
-Basically an event context is created,and handlers for timeounts and stream
-events can be registered with this context.
-
-After initial setup, the typical application will enter the event loop that
-will only return at program termination.
-
-The C API
----------
-The typical application will do the following steps
-1. Create the event context with lueCtxtCreate()
-2. Register initial callbacks with lueAddInput, lueAddOutput and lueAddTimer
-3. Enter the event loop
-
-Lua binding
------------
-A lua binding is available that should mix well with luasocket and luaposix.
-Time resolutions are in milli second integers in order to support integer-only
-embedded environments
-
-### function luevent.addFileIO(fdesc, handler, mode)
-Add a handler on a stream.  The handler will sustain itself GC wise.
-Use *object*:clear() to unregister the handler
-* fdesc   The posix file descriptor "small integer".  
-          Use the ":getfd()" method on a "normal" lua stream or socket to obtain fdesc.
-* handler A function object. The handler object is supplied as the first parameter when called.
-* mode    Optional. Input ("r") or output ("w") event. Default is input
-* return  A new filehandler object
-
-### function luevent.addTimer(msecs, handler)
-Create a new timer object. Implicitly cleared when handler is called.
-Typical usage:
-  local hdl
-  hdl = luevent.addTimer(50, function() hdl = nil ..... end)
-  ......
-  if hdl then hdl:clear() hdl = nil end
-Here *hdl* is used to keep track of whether the timer is active.
-
-* msecs   The number of milliseconds until the timer expires
-* handler A function object. The handler object is supplied as the first parameter when called.
-* return  A new timer object
-
-### function object:clear()
-Cancel a callback registration. Renders the object ready for GC.
-
-### function object:handler()
-Obtain the handler function from a callback registration.
-
-
-Building
---------
-Use make:
-
-* make all: The library
-* make test: Test and showcase
-* make lua: Build the lua binding
-
-Installation
-------------
-Is purely manual, but would be something along the lines of:
- sudo install -m 444 libuevent.so.1 /usr/lib/libuevent.so.1
- sudo install -m 444 luevent.so /usr/lib/lua/5.1/luevent.so
-
-<!-- vim: set syntax=mkd textwidth=79 nofoldenable: -->
-

README

@@ -0,0 +1 @@
+README.md