Add the ability to test EBCDIC builds
Add the ability to test EBCDIC builds

This adds the define CHARSET_EBCDIC_TEST which enables testing of EBCDIC
code on an ASCII system.

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

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