Rename pg_shdepend.c's typedef "objectType" to SharedDependencyObjectType.

The name objectType is widely used as a field name, and it's pure luck that
this conflict has not caused pgindent to go crazy before.  It messed up
pg_audit.c pretty good though.  Since pg_shdepend.c doesn't export this
typedef and only uses it in three places, changing that seems saner than
changing the field usages.

Back-patch because we're contemplating using the union of all branch
typedefs for future pgindent runs, so this won't fix anything if it
stays the same in back branches.

src/backend/catalog/pg_shdepend.c

@@ -67,7 +67,7 @@ typedef enum
 	LOCAL_OBJECT,
 	SHARED_OBJECT,
 	REMOTE_OBJECT
-} objectType;
+} SharedDependencyObjectType;
 
 static void getOidListDiff(Oid *list1, int *nlist1, Oid *list2, int *nlist2);
 static Oid	classIdGetDbId(Oid classId);
@@ -84,7 +84,8 @@ static void shdepDropDependency(Relation sdepRel,
 					bool drop_subobjects,
 					Oid refclassId, Oid refobjId,
 					SharedDependencyType deptype);
-static void storeObjectDescription(StringInfo descs, objectType type,
+static void storeObjectDescription(StringInfo descs,
+					   SharedDependencyObjectType type,
 					   ObjectAddress *object,
 					   SharedDependencyType deptype,
 					   int count);
@@ -1062,7 +1063,8 @@ shdepLockAndCheckObject(Oid classId, Oid objectId)
  * and count to be nonzero; deptype is not used in this case.
  */
 static void
-storeObjectDescription(StringInfo descs, objectType type,
+storeObjectDescription(StringInfo descs,
+					   SharedDependencyObjectType type,
 					   ObjectAddress *object,
 					   SharedDependencyType deptype,
 					   int count)