Configure option 'no-deprecated' means '-DOPENSSL_API_COMPAT=0x10100000L'

(that is, until 1.2.0 comes along)

Since we allow future deprecation (and that shouldn't be affected
by 'no-deprecated'), we need to distinguish what to have deprecated
on the value of OPENSSL_API_COMPAT, not the existence of
OPENSSL_NO_DEPRECATED.

Note that the macro OPENSSL_NO_DEPRECATED still exists, in case
someone still uses it.

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6470)