Add copyright to most .pl files
This does NOT cover any .pl file that has other copyright in it.
Most of those are Andy's but some are public domain.
Fix typo's in some existing files.

Reviewed-by: Richard Levitte <levitte@openssl.org>

Reviewed-by: Richard Levitte <levitte@openssl.org>

Not all assemblers of "gas" flavour handle binary constants, e.g.
seasoned MacOS Xcode doesn't, so give them a hand.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

Reviewed-by: Richard Levitte <levitte@openssl.org>

Once upon a time, there was chop, which somply chopped off the last
character of $_ or a given variable, and it was used to take off the
EOL character (\n) of strings.

... but then, you had to check for the presence of such character.

So came chomp, the better chop which checks for \n before chopping it
off.  And this worked well, as long as Perl made internally sure that
all EOLs were converted to \n.

These days, though, there seems to be a mixture of perls, so lines
from files in the "wrong" environment might have \r\n as EOL, or just
\r (Mac OS, unless I'm misinformed).

So it's time we went for the more generic variant and use s|\R$||, the
better chomp which recognises all kinds of known EOLs and chops them
off.

A few chops were left alone, as they are use as surgical tools to
remove one last slash or one last comma.

NOTE: \R came with perl 5.10.0.  It means that from now on, our
scripts will fail with any older version.

Reviewed-by: Rich Salz <rsalz@openssl.org>

RT#3885

Reviewed-by: Rich Salz <rsalz@openssl.org>

Signed-off-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>

Reviewed-by: Rich Salz <rsalz@openssl.org>

perlasm/x86_64-xlate.pl instead.

PR: 2435,2440

fix bug in .crt section alignment.
PR: 2620, 2624

http://crypto.stanford.edu/vpaes/ for background information.
It's not integrated into build system yet.

assembler workaround to all assemblers.

Solaris, MacOS X, elderly gas...

PR: 2466

pclmulqdq.

PR 2356

correct solution to problem addressed in committ #19244.

PR: 2094,2095

This resolves md5-x86_64.pl and sha1-x86_64.pl bugs, but without modifying
the code.
PR: 2094,2095