Fix compiler div-by-0 error when it encountered 1.0/0.0

with division by 0.
Tricked the compiler to use volatile local variable zero instead, so it
does not know for sure whether or not it's going to be zero.

to cJSON_ParseWithOpts, then that will store the error pointer (if
parsing fails).

thanks to kolman and Irwan Djajadi on SourceForge.

Using values in powers of two for cJSON_* constants

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

We can use bitops to check if the parsed JSON is of a particular types
using OR

We can use bitops to check if the parsed JSON is of a particular types
using OR

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