Rename "openssl x509" option "-config" to "-extfile", because it

doesn't have a default value like the "-config" options of other
openssl subprograms.

apps/openssl.cnf

@@ -7,7 +7,7 @@ RANDFILE		= $ENV::HOME/.rnd
 oid_file		= $ENV::HOME/.oid
 oid_section		= new_oids
 
-# To use this configuration file with the "-config" option of the
+# To use this configuration file with the "-extfile" option of the
 # "openssl x509" utility, name here the section containing the
 # X.509v3 extensions to use:
 # extensions		= 

apps/x509.c

@@ -114,7 +114,7 @@ static char *x509_usage[]={
 " -text           - print the certificate in text form\n",
 " -C              - print out C code forms\n",
 " -md2/-md5/-sha1/-mdc2 - digest to do an RSA sign with\n",
-" -config         - configuration file with X509V3 extensions to add\n",
+" -extfile        - configuration file with X509V3 extensions to add\n",
 NULL
 };
 
@@ -213,7 +213,7 @@ int MAIN(int argc, char **argv)
 				goto bad;
 				}
 			}
-		else if (strcmp(*argv,"-config") == 0)
+		else if (strcmp(*argv,"-extfile") == 0)
 			{
 			if (--argc < 1) goto bad;
 			extfile= *(++argv);

doc/openssl.txt

@@ -99,7 +99,7 @@ extension section is used when the -x509 option is present to create a
 self signed root certificate.
 
 The 'x509' utility also supports extensions when it signs a certificate.
-The -config option is used to set the configuration file containing the
+The -extfile option is used to set the configuration file containing the
 extensions. In this case a line with:
 
 extensions = extension_section