bn/asm/x86_64-mont5.pl: add MULX/AD*X code path.

This also eliminates code duplication between x86_64-mont and x86_64-mont
and optimizes even original non-MULX code.
x86_64-xlate.pl: minor update.
Add release dates to NEWS
remove obsolete STATUS file
Don't use rdrand engine as default unless explicitly requested.
(cherry picked from commit 16898401bd47a153fbf799127ff57fdcfcbd324f)
Verify parameter retrieval functions.

New functions to retrieve internal pointers to X509_VERIFY_PARAM
for SSL_CTX and SSL structures.
(cherry picked from commit be0c9270690ed9c1799900643cab91de146de857)
Fix for partial chain notification.

For consistency with other cases if we are performing
partial chain verification with just one certificate
notify the callback with ok==1.
(cherry picked from commit 852553d9005e13aed7feb986a5d71cb885b994c7)
Update to pad extension.

Fix padding calculation for different SSL_METHOD types. Use the
standard name as used in draft-agl-tls-padding-02
Add opaque ID structure.

Move the IP, email and host checking fields from the public
X509_VERIFY_PARAM structure into an opaque X509_VERIFY_PARAM_ID
structure. By doing this the structure can be modified in future
without risk of breaking any applications.
(cherry picked from commit adc6bd73e3bd10ce6e76867482e8d137071298d7)

Conflicts:

	crypto/x509/x509_vpm.c