Make streaming support in cms cleaner.

Note errors in various S/MIME functions if CMS_final() fails.

Add streaming support for enveloped data.

Generalise RecipientInfo and enveloped data handling so applications can
add their own key lookup routines as well as using the standard ones.

Fix signed data creation so versions are only corrected if structure is
being created.

OPENSSL_NO_DEPRECATED, etc. Steve, please double-check the CMS stuff...

examples. All RFC4134 examples can now be processed.

examples. All RFC4134 examples can not be processed.

Update CHANGES.

consistent with other content types.

tests in RFC4134.

by envelopedData.

Use PRE and not POST when freeing up RecipientInfo.

Initial support for CMS.

Add zlib compression BIO.

Add AES key wrap implementation.

Generalize S/MIME MIME code to support CMS and/or PKCS7.

holder and its actual encoding never used.

Just as well because it's value looks like it was made up in the mists of
time...

Now there is a registered value for zlib compression (used in S/MIME
compressedData content type) use that instead.