identification: Add support for dmdName RDN (2.5.4.54)

It's listed in RFC 2256 but was later removed with RFC 4519, but there
are still some certs that use it.

Closes strongswan/strongswan#43.

src/libstrongswan/asn1/oid.txt

@@ -34,6 +34,7 @@
     0x2B                     "I"						OID_INITIALS
     0x2D                     "ID"						OID_UNIQUE_IDENTIFIER
     0x2E                     "dnQualifier"				OID_DN_QUALIFIER
+    0x36                     "dmdName"					OID_DMD_NAME
     0x41                     "pseudonym"				OID_PSEUDONYM
     0x48                     "role"						OID_ROLE
   0x1D                       "id-ce"

src/libstrongswan/utils/identification.c

@@ -80,6 +80,7 @@ static const x501rdn_t x501rdns[] = {
 	{"G", 					OID_GIVEN_NAME,				ASN1_PRINTABLESTRING},
 	{"I", 					OID_INITIALS,				ASN1_PRINTABLESTRING},
 	{"dnQualifier", 		OID_DN_QUALIFIER,			ASN1_PRINTABLESTRING},
+	{"dmdName", 			OID_DMD_NAME,				ASN1_PRINTABLESTRING},
 	{"pseudonym", 			OID_PSEUDONYM,				ASN1_PRINTABLESTRING},
 	{"ID", 					OID_UNIQUE_IDENTIFIER,		ASN1_PRINTABLESTRING},
 	{"EN", 					OID_EMPLOYEE_NUMBER,		ASN1_PRINTABLESTRING},
@@ -220,6 +221,7 @@ METHOD(enumerator_t, rdn_part_enumerate, bool,
 		{OID_GIVEN_NAME,		ID_PART_RDN_G},
 		{OID_INITIALS,			ID_PART_RDN_I},
 		{OID_DN_QUALIFIER,		ID_PART_RDN_DNQ},
+		{OID_DMD_NAME,			ID_PART_RDN_DMDN},
 		{OID_PSEUDONYM,			ID_PART_RDN_PN},
 		{OID_UNIQUE_IDENTIFIER,	ID_PART_RDN_ID},
 		{OID_EMAIL_ADDRESS,		ID_PART_RDN_E},

src/libstrongswan/utils/identification.h

@@ -168,6 +168,8 @@ enum id_part_t {
 	ID_PART_RDN_I,
 	/** DN Qualifier RDN of a DN */
 	ID_PART_RDN_DNQ,
+	/** dmdName RDN of a DN */
+	ID_PART_RDN_DMDN,
 	/** Pseudonym RDN of a DN */
 	ID_PART_RDN_PN,
 	/** UniqueIdentifier RDN of a DN */