Fix small but important regression
In OpenSSL pre 1.1.0, 'openssl x509 -CAkeyformat engine' was possible
and supported.  In 1.1.0, a small typo ('F' instead of 'f') removed
that possibility.  This restores the pre 1.1.0 behavior.
Fixes
@@ -129,7 +129,7 @@ const OPTIONS x509_options[] = {
{"checkemail", OPT_CHECKEMAIL, 's', "Check certificate matches email"},
{"checkip", OPT_CHECKIP, 's', "Check certificate matches ipaddr"},
{"CAform", OPT_CAFORM, 'F', "CA format - default PEM"},
- {"CAkeyform", OPT_CAKEYFORM, 'F', "CA key format - default PEM"},
+ {"CAkeyform", OPT_CAKEYFORM, 'f', "CA key format - default PEM"},
{"sigopt", OPT_SIGOPT, 's', "Signature parameter in n:v form"},
{"force_pubkey", OPT_FORCE_PUBKEY, '<', "Force the Key to put inside certificate"},
{"next_serial", OPT_NEXT_SERIAL, '-', "Increment current certificate serial number"},
