Use non-copying BIO interface in ssltest.c.

Correct warnings.

Non-copying interface to BIO pairs.
It's still totally untested ...

change formatting a bit

comment

cosmetic changes

avoid confliction definitions of NDEBUG

Disable asserts for standard configurations.

Use same name in the definition as in the header file declaration :-/
(the extra "get" makes the name quite long, but otherwise it'd sound
as if you could request something rather than obtain

Use same name in the definition as in the header file declaration :-/
(the extra "get" makes the name quite long, but otherwise it'd sound
as if you could request something rather than obtain information
about what the peer did).

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Don't try to use zero-byte buffers.

Bugfix.

BIO pairs.

Avoid warnings.

Survive pedanticism.

"request" added.

Fix for BIO pairs.

treat init properly

Introduce "BIO pairs", which (when finished) will relay data
so that the SSL library can be used for applications that
have to handle all the actual I/O themselves.