Add build system for posix systems
Fix virtual destructors missing
Linux STL vector::insert signature, iterator is not const
fix compile and link errors, warnings
remove trailing ws
tabs to spaces
Fix unit test: conversion to unsigned type when the type is negative
assert renamed to JSONCONS_ASSERT
Fix compilation error when using the Android NDK
Merge pull request #1 from cachapa/master

Fix compilation error when using the Android NDK
Reconcile
Merge branch 'master' of https://github.com/larroy/jsoncons into larroy-master

Conflicts:
	src/jsoncons/json1.hpp
	src/jsoncons/json2.hpp
	src/jsoncons/json_deserializer.hpp
	src/jsoncons/json_structures.hpp
	src/jsoncons/jsoncons_config.hpp
	test_suite/src/json_accessor_tests.cpp
Fixed insert signature in json_structures
Cleanup
Renamed null_value() to null()
null_value() -> value(nullptr_t)