Fix EBCDIC problem in conf_def.h
Fix EBCDIC problem in conf_def.h

The non-ascii version of this set of macros ensures that the "a" variable
is inside the expected range. This logic wasn't quite right for the
EBCDIC version.

Reviewed-by: Andy Polyakov <015edf36635e030d5e009e08808a59984e629740@openssl.org>

openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl,openssl/openssl