Add JSON parser library.

Code is v1.0.0 unmodified from [1] distributed under BSD 2-Clause license.
Code changes are hosted at [2].

[1] https://github.com/udp/json-parser
[2] https://github.com/cooperative-computing-lab/json-parser

COPYING

@@ -1,3 +1,5 @@
+CCTOOLS License:
+
 		    GNU GENERAL PUBLIC LICENSE
 		       Version 2, June 1991
 
@@ -337,3 +339,30 @@ proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
 library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
+
+
+FILE dttools/src/json.[ch]:
+
+Copyright (C) 2012 James McLaughlin et al.  All rights reserved.
+https://github.com/udp/json-parser
+
+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.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.

dttools/src/Makefile

@@ -44,6 +44,7 @@ SOURCES = auth.c  \
           hmac.c  \
           http_query.c  \
           itable.c  \
+          json.c  \
           link.c  \
           link_auth.c  \
           link_nvpair.c \