add bsearch for arrays

Remove trailing whitespaces

Some badly formated "numbers" could get partly parsed,
resulting in truncated results instead of raising an
error.

Examples :
 '1.2.3'      -> (double)1.2
 '2015-01-15' -> (int)2015

This patch is not perfect (ex: input can still end with a 'E', which
is forbidden by json.org doc) but should avoid non-sensically
formated input.

Tests added.

improve doc for json_object_to_json_string()

Remove json_type enum trailing comma

Fix build using MinGW.

Removed duplicate check in random_seed test - bug #140

Arrays can already be sorted with json_object_array_sort() which uses
qsort() of the standard C library. This adds a counterpart using the
bsearch() from C.

MinGW requires wincrypt.h.
GCC does not support #pragma comment, which trips Werror.

The last json_tokener_errors change affects the binary package, we need a bump to solve the issue.

See [this bug of postgis.](https://bugzilla.redhat.com/show_bug.cgi?id=1123785)

Also refactor json_object_from_file to use json_object_from_fd
internally.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>

Eliminate all uses of bits.h within the json-c code.

Thanks to Susant Sahani for pointing out some of these.

Update and rename README to README.md

Remove unused variable 'size'

- code blocks
 - slight text changes (rewording)
 - pretty printing

Markdownify + fix a few errors here and there

Bump the version in the release checklist.

* CVE-2013-6371: hash collision denial of service
* CVE-2013-6370: buffer overflow if size_t is larger than int

nan function requires -lm on some platforms - use of NAN is better, if available

Missing lowercase literals test

Only allow lowercase literals in STRICT mode

Avoid potential overflow in json_object_get_double