Move type operations to another structure

Every type has free, print, check_constraints, ber_decoder, der_encoder,
xer_decoder, xer_encoder, uper_decoder, uper_encoder and outmost_tag
operations. We move them out to a separate structure asn_TYPE_operation_t.

Combined with previous logic simplification, these operations are based
on ASN.1 basic types, constructed types and string types. So we can
reduce the space occupied by asn_TYPE_descriptor_t variables.
diff --git a/tests/tests-asn1c-compiler/03-enum-OK.asn1.-Pfwide-types b/tests/tests-asn1c-compiler/03-enum-OK.asn1.-Pfwide-types
index af272c5..62fc5b1 100644
--- a/tests/tests-asn1c-compiler/03-enum-OK.asn1.-Pfwide-types
+++ b/tests/tests-asn1c-compiler/03-enum-OK.asn1.-Pfwide-types
@@ -68,17 +68,8 @@
 asn_TYPE_descriptor_t asn_DEF_Enum1 = {
 	"Enum1",
 	"Enum1",
-	ENUMERATED_free,
-	ENUMERATED_print,
-	ENUMERATED_compare,
+	&asn_OP_ENUMERATED,
 	ENUMERATED_constraint,
-	ENUMERATED_decode_ber,
-	ENUMERATED_encode_der,
-	ENUMERATED_decode_xer,
-	ENUMERATED_encode_xer,
-	0, 0,	/* No OER support, use "-gen-OER" to enable */
-	0, 0,	/* No PER support, use "-gen-PER" to enable */
-	0,	/* Use generic outmost tag fetcher */
 	asn_DEF_Enum1_tags_1,
 	sizeof(asn_DEF_Enum1_tags_1)
 		/sizeof(asn_DEF_Enum1_tags_1[0]), /* 1 */
@@ -170,17 +161,8 @@
 asn_TYPE_descriptor_t asn_DEF_Enum2 = {
 	"Enum2",
 	"Enum2",
-	ENUMERATED_free,
-	ENUMERATED_print,
-	ENUMERATED_compare,
+	&asn_OP_ENUMERATED,
 	ENUMERATED_constraint,
-	ENUMERATED_decode_ber,
-	ENUMERATED_encode_der,
-	ENUMERATED_decode_xer,
-	ENUMERATED_encode_xer,
-	0, 0,	/* No OER support, use "-gen-OER" to enable */
-	0, 0,	/* No PER support, use "-gen-PER" to enable */
-	0,	/* Use generic outmost tag fetcher */
 	asn_DEF_Enum2_tags_1,
 	sizeof(asn_DEF_Enum2_tags_1)
 		/sizeof(asn_DEF_Enum2_tags_1[0]), /* 1 */
@@ -260,17 +242,8 @@
 asn_TYPE_descriptor_t asn_DEF_Enum3 = {
 	"Enum3",
 	"Enum3",
-	ENUMERATED_free,
-	ENUMERATED_print,
-	ENUMERATED_compare,
+	&asn_OP_ENUMERATED,
 	ENUMERATED_constraint,
-	ENUMERATED_decode_ber,
-	ENUMERATED_encode_der,
-	ENUMERATED_decode_xer,
-	ENUMERATED_encode_xer,
-	0, 0,	/* No OER support, use "-gen-OER" to enable */
-	0, 0,	/* No PER support, use "-gen-PER" to enable */
-	0,	/* Use generic outmost tag fetcher */
 	asn_DEF_Enum3_tags_1,
 	sizeof(asn_DEF_Enum3_tags_1)
 		/sizeof(asn_DEF_Enum3_tags_1[0]), /* 1 */
@@ -353,17 +326,8 @@
 asn_TYPE_descriptor_t asn_DEF_Enum4 = {
 	"Enum4",
 	"Enum4",
-	ENUMERATED_free,
-	ENUMERATED_print,
-	ENUMERATED_compare,
+	&asn_OP_ENUMERATED,
 	ENUMERATED_constraint,
-	ENUMERATED_decode_ber,
-	ENUMERATED_encode_der,
-	ENUMERATED_decode_xer,
-	ENUMERATED_encode_xer,
-	0, 0,	/* No OER support, use "-gen-OER" to enable */
-	0, 0,	/* No PER support, use "-gen-PER" to enable */
-	0,	/* Use generic outmost tag fetcher */
 	asn_DEF_Enum4_tags_1,
 	sizeof(asn_DEF_Enum4_tags_1)
 		/sizeof(asn_DEF_Enum4_tags_1[0]), /* 1 */
@@ -443,17 +407,8 @@
 asn_TYPE_descriptor_t asn_DEF_Enum5 = {
 	"Enum5",
 	"Enum5",
-	ENUMERATED_free,
-	ENUMERATED_print,
-	ENUMERATED_compare,
+	&asn_OP_ENUMERATED,
 	ENUMERATED_constraint,
-	ENUMERATED_decode_ber,
-	ENUMERATED_encode_der,
-	ENUMERATED_decode_xer,
-	ENUMERATED_encode_xer,
-	0, 0,	/* No OER support, use "-gen-OER" to enable */
-	0, 0,	/* No PER support, use "-gen-PER" to enable */
-	0,	/* Use generic outmost tag fetcher */
 	asn_DEF_Enum5_tags_1,
 	sizeof(asn_DEF_Enum5_tags_1)
 		/sizeof(asn_DEF_Enum5_tags_1[0]), /* 1 */