move libevent into base

third_party/libevent/LICENSE

Index: third_party/libevent/LICENSE
diff --git a/third_party/libevent/LICENSE b/third_party/libevent/LICENSE
deleted file mode 100644
index cabd9fc7bfbcd2cd1104de4c385687394662b2d1..0000000000000000000000000000000000000000
--- a/third_party/libevent/LICENSE
+++ /dev/null
@@ -1,53 +0,0 @@
-Libevent is available for use under the following license, commonly known
-as the 3-clause (or "modified") BSD license:
-
-==============================
-Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
-Copyright (c) 2007-2010 Niels Provos and Nick Mathewson
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-1. Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-2. Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-3. The name of the author may not be used to endorse or promote products
-   derived from this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
-IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
-OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
-IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
-NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
-THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-==============================
-
-Portions of Libevent are based on works by others, also made available by
-them under the three-clause BSD license above.  The copyright notices are
-available in the corresponding source files; the license is as above.  Here's
-a list:
-
-log.c:
-   Copyright (c) 2000 Dug Song <dugsong@monkey.org>
-   Copyright (c) 1993 The Regents of the University of California.
-
-strlcpy.c:
-   Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
-
-win32.c:
-   Copyright (c) 2003 Michael A. Davis <mike@datanerds.net>
-
-evport.c:
-   Copyright (c) 2007 Sun Microsystems
-
-min_heap.h:
-   Copyright (c) 2006 Maxim Yegorushkin <maxim.yegorushkin@gmail.com>
-
-tree.h:
-   Copyright 2002 Niels Provos <provos@citi.umich.edu>