tool: Use Kerberos for supported features

configure.ac

@@ -3364,7 +3364,7 @@ fi
 
 if test "x$CURL_DISABLE_CRYPTO_AUTH" != "x1" -a \
     \( "x$HAVE_GSSAPI" = "x1" -o "x$USE_WINDOWS_SSPI" = "x1" \); then
-  SUPPORT_FEATURES="$SUPPORT_FEATURES krb5"
+  SUPPORT_FEATURES="$SUPPORT_FEATURES Kerberos"
 fi
 
 if test "x$CURL_DISABLE_CRYPTO_AUTH" != "x1"; then

src/tool_help.c

@@ -264,12 +264,12 @@ static const struct feat feats[] = {
   {"Largefile",      CURL_VERSION_LARGEFILE},
   {"SSPI",           CURL_VERSION_SSPI},
   {"GSS-API",        CURL_VERSION_GSSAPI},
+  {"Kerberos",       CURL_VERSION_KERBEROS5},
   {"SPNEGO",         CURL_VERSION_SPNEGO},
   {"NTLM",           CURL_VERSION_NTLM},
   {"NTLM_WB",        CURL_VERSION_NTLM_WB},
   {"SSL",            CURL_VERSION_SSL},
   {"krb4",           CURL_VERSION_KERBEROS4},
-  {"krb5",           CURL_VERSION_KERBEROS5},
   {"libz",           CURL_VERSION_LIBZ},
   {"CharConv",       CURL_VERSION_CONV},
   {"TLS-SRP",        CURL_VERSION_TLSAUTH_SRP},