[OE-core] Add LibreSSL support

[Ruslan Babayev]

Hi Armin,

It is the latest stable. And it looks like this patch has made it into
2.2.4

http://ftp.openbsd.org/pub/OpenBSD/patches/5.8/common/007_obj2txt.patch.sig

akuster808 writes:

> Ruslan,
>
> any reason version 2.3.1 was not picked?
>
> I believe 2.2.4 is missing  (CVE-2015-5333 and CVE-2015-5334)
>
> - armin
>
> On 11/03/2015 03:34 PM, Ruslan Babayev wrote:
>> Please find attached the patch to add support for LibreSSL.
>> 
>> OpenSSL is still preferred, so you'd have add these to your local.conf
>> 
>> PREFERRED_PROVIDER_openssl ?= "openssl"
>> PREFERRED_PROVIDER_openssl-native ?= "openssl-native"
>> PREFERRED_PROVIDER_nativesdk-openssl ?= "nativesdk-openssl"
>> 
>> 
>>