Expose alloc functions for EC{PK,}PARAMETERS

Declare EC{PK,}PARAMETERS_{new,free} functions in public headers. The
free functions are necessary because EC_GROUP_get_ec{pk,}parameters()
was made public by commit 60b350a3ef96 ("RT3676: Expose ECgroup i2d
functions").

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
diff --git a/doc/crypto/X509_dup.pod b/doc/crypto/X509_dup.pod
index 03a81f0..574994d 100644
--- a/doc/crypto/X509_dup.pod
+++ b/doc/crypto/X509_dup.pod
@@ -39,6 +39,10 @@
 DIST_POINT_free,
 DIST_POINT_new,
 DSAparams_dup,
+ECPARAMETERS_free,
+ECPARAMETERS_new,
+ECPKPARAMETERS_free,
+ECPKPARAMETERS_new,
 EDIPARTYNAME_free,
 EDIPARTYNAME_new,
 ESS_CERT_ID_dup,
diff --git a/include/openssl/ec.h b/include/openssl/ec.h
index b6db22d..656cb41 100644
--- a/include/openssl/ec.h
+++ b/include/openssl/ec.h
@@ -699,7 +699,9 @@
 /********************************************************************/
 
 DECLARE_ASN1_ITEM(ECPKPARAMETERS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(ECPKPARAMETERS)
 DECLARE_ASN1_ITEM(ECPARAMETERS)
+DECLARE_ASN1_ALLOC_FUNCTIONS(ECPARAMETERS)
 
 /*
  * EC_GROUP_get_basis_type() returns the NID of the basis type used to
diff --git a/util/libcrypto.num b/util/libcrypto.num
index 78b39c7..7a93915 100644
--- a/util/libcrypto.num
+++ b/util/libcrypto.num
@@ -4203,3 +4203,7 @@
 PKCS12_add_friendlyname_utf8            4150	1_1_0	EXIST::FUNCTION:
 OPENSSL_uni2utf8                        4151	1_1_0	EXIST::FUNCTION:
 PKCS12_key_gen_utf8                     4152	1_1_0	EXIST::FUNCTION:
+ECPKPARAMETERS_free                     4153	1_1_0	EXIST::FUNCTION:EC
+ECPARAMETERS_free                       4154	1_1_0	EXIST::FUNCTION:EC
+ECPKPARAMETERS_new                      4155	1_1_0	EXIST::FUNCTION:EC
+ECPARAMETERS_new                        4156	1_1_0	EXIST::FUNCTION:EC