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/141-component-relation-OK.asn1.-P b/tests/tests-asn1c-compiler/141-component-relation-OK.asn1.-P
index 2718acc..2342446 100644
--- a/tests/tests-asn1c-compiler/141-component-relation-OK.asn1.-P
+++ b/tests/tests-asn1c-compiler/141-component-relation-OK.asn1.-P
@@ -99,7 +99,7 @@
 	    const asn_ioc_cell_t *constraining_cell = &itable->rows[row * itable->columns_count + constraining_column];
 	    const asn_ioc_cell_t *type_cell = &itable->rows[row * itable->columns_count + for_column];
 	
-	    if(constraining_cell->type_descriptor->compare_struct(constraining_cell->type_descriptor, constraining_value, constraining_cell->value_sptr) == 0) {
+	    if(constraining_cell->type_descriptor->op->compare_struct(constraining_cell->type_descriptor, constraining_value, constraining_cell->value_sptr) == 0) {
 	        result.type_descriptor = type_cell->type_descriptor;
 	        result.presence_index = row + 1;
 	        break;
@@ -173,17 +173,8 @@
 asn_TYPE_descriptor_t asn_DEF_value_3 = {
 	"value",
 	"value",
-	OPEN_TYPE_free,
-	OPEN_TYPE_print,
-	OPEN_TYPE_compare,
+	&asn_OP_OPEN_TYPE,
 	OPEN_TYPE_constraint,
-	OPEN_TYPE_decode_ber,
-	OPEN_TYPE_encode_der,
-	OPEN_TYPE_decode_xer,
-	OPEN_TYPE_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 */
 	0,	/* No effective tags (pointer) */
 	0,	/* No effective tags (count) */
 	0,	/* No tags (pointer) */
@@ -238,17 +229,8 @@
 asn_TYPE_descriptor_t asn_DEF_Frame = {
 	"Frame",
 	"Frame",
-	SEQUENCE_free,
-	SEQUENCE_print,
-	SEQUENCE_compare,
+	&asn_OP_SEQUENCE,
 	SEQUENCE_constraint,
-	SEQUENCE_decode_ber,
-	SEQUENCE_encode_der,
-	SEQUENCE_decode_xer,
-	SEQUENCE_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_Frame_tags_1,
 	sizeof(asn_DEF_Frame_tags_1)
 		/sizeof(asn_DEF_Frame_tags_1[0]), /* 1 */
@@ -322,17 +304,8 @@
 asn_TYPE_descriptor_t asn_DEF_ConstrainedInteger = {
 	"ConstrainedInteger",
 	"ConstrainedInteger",
-	NativeInteger_free,
-	NativeInteger_print,
-	NativeInteger_compare,
+	&asn_OP_NativeInteger,
 	ConstrainedInteger_constraint,
-	NativeInteger_decode_ber,
-	NativeInteger_encode_der,
-	NativeInteger_decode_xer,
-	NativeInteger_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_ConstrainedInteger_tags_1,
 	sizeof(asn_DEF_ConstrainedInteger_tags_1)
 		/sizeof(asn_DEF_ConstrainedInteger_tags_1[0]), /* 1 */
@@ -380,17 +353,8 @@
 asn_TYPE_descriptor_t asn_DEF_PrimitiveMessage = {
 	"PrimitiveMessage",
 	"PrimitiveMessage",
-	SEQUENCE_free,
-	SEQUENCE_print,
-	SEQUENCE_compare,
+	&asn_OP_SEQUENCE,
 	SEQUENCE_constraint,
-	SEQUENCE_decode_ber,
-	SEQUENCE_encode_der,
-	SEQUENCE_decode_xer,
-	SEQUENCE_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_PrimitiveMessage_tags_1,
 	sizeof(asn_DEF_PrimitiveMessage_tags_1)
 		/sizeof(asn_DEF_PrimitiveMessage_tags_1[0]), /* 1 */
@@ -438,17 +402,8 @@
 asn_TYPE_descriptor_t asn_DEF_ComplexMessage = {
 	"ComplexMessage",
 	"ComplexMessage",
-	SEQUENCE_free,
-	SEQUENCE_print,
-	SEQUENCE_compare,
+	&asn_OP_SEQUENCE,
 	SEQUENCE_constraint,
-	SEQUENCE_decode_ber,
-	SEQUENCE_encode_der,
-	SEQUENCE_decode_xer,
-	SEQUENCE_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_ComplexMessage_tags_1,
 	sizeof(asn_DEF_ComplexMessage_tags_1)
 		/sizeof(asn_DEF_ComplexMessage_tags_1[0]), /* 1 */