DiffieHellman: gracefully handle platforms that fail the sha256 self test, currently only known to be PowerPC. Added support for PHP's built-in hash functions (they were added in 5.1.2) and use them in lieu of the built-in sha256 implementation when available.

{
	// Language metadata
	lang_name_english: 'English',
	lang_name_native: 'English',
	lang_code: 'eng'
}