fixed segmentation fault for non-json input / provided test case

Publish the libraries and headers to the right directories during 'make install'.

Added uninstall rule to Makefile

Fix printing of empty string pointers

Once the check if str is NULL is reached, str has already been
derereferenced in the for loop, so in the case that the if clause would
be entered, the program has already crashed due to a null pointer
dereference.

By checking the content of str before dereferencing, the code in the if
clause is actually useful.

for (ptr=str;*ptr;ptr++) flag|=((*ptr>0 && *ptr<32)||(*ptr=='\"')||(*ptr=='\\'))?1:0;

...

if (!str)
...

Fix format problem with empty objects

When printing empty objects, the closing curly brace was missing one
indentation level.

Example from the output of test_utils:

BEFORE FIX:
{
	"foo":	"bar",
	"child":	{
		"grandchild":	{
	}
	}
}

AFTER FIX:
{
	"foo":	"bar",
	"child":	{
		"grandchild":	{
		}
	}
}

fix boolean expression

fix memory leaks

Remove line that will never be executed

This expression was always false.

README.md: fixed formatting

add new macro for iterating over an array

added cJSON_HasObjectItem

Handle invalid numbers

Previously cJSON generated invalid JSON when a number was infinite or
similar. This patch changes the behaviour to match javascript, that is
to render such a number as null.

Remove "m" library dependency on Windows.

Update gitignore to avoid tracking unwanted files

.gitignore updated to avoid tracking files generated after build. Following list
of files are added:
*.o
*.a
*.so
*.swp
*.patch
tags
Signed-off-by: NAjay Bhargav <ajay.bhargav@einfochips.com>

Merge latest upstream code (svn rev. 73) into github fork

Signed-off-by: NAnton Sergeev <Anton.Sergeev@elecard.ru>

Signed-off-by: NAnton Sergeev <Anton.Sergeev@elecard.ru>

Conflicts:
	cJSON.c
	test.c

Add CMakeLists.txt

Signed-off-by: NAnton Sergeev <Anton.Sergeev@elecard.ru>

Update cJSON.c

Update test.c