stdlib: correct fixits for 'func generator()'

rdar://problem/25492963

Author: gribozavr

stdlib/public/core/Collection.swift

@@ -744,7 +744,7 @@ extension Collection {
   @available(*, unavailable, renamed: "Iterator")
   public typealias Generator = Iterator
 
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> Iterator {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/CollectionOfOne.swift

@@ -88,7 +88,7 @@ extension CollectionOfOne : CustomReflectable {
 public struct GeneratorOfOne<Element> {}
 
 extension IteratorOverOne {
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> IteratorOverOne<Element> {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/EmptyCollection.swift

@@ -75,7 +75,7 @@ public struct EmptyCollection<Element> : Collection {
 public struct EmptyGenerator<Element> {}
 
 extension EmptyIterator {
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> EmptyIterator<Element> {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/ExistentialCollection.swift.gyb

@@ -678,7 +678,7 @@ public struct Any${Traversal}Collection<Element> : AnyCollectionProtocol {
 public struct AnyGenerator<Element> {}
 
 extension AnyIterator {
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> AnyIterator<Element> {
     fatalError("unavailable function can't be called")
   }
@@ -698,7 +698,7 @@ extension Any${Kind} {
 public typealias AnyCollectionType = AnyCollectionProtocol
 
 extension AnyCollectionProtocol {
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> AnyIterator<Iterator.Element> {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/Filter.swift

@@ -277,7 +277,7 @@ extension LazyFilterSequence {
     fatalError("unavailable function can't be called")
   }
 
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> LazyFilterIterator<Base.Iterator> {
     fatalError("unavailable function can't be called")
   }
@@ -292,7 +292,7 @@ extension LazyFilterCollection {
     fatalError("unavailable function can't be called")
   }
 
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> LazyFilterIterator<Base.Iterator> {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/Flatten.swift.gyb

@@ -331,7 +331,7 @@ public struct FlattenGenerator<
 > {}
 
 extension FlattenSequence {
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> FlattenIterator<Base.Iterator> {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/HashedCollections.swift.gyb

@@ -4238,7 +4238,7 @@ extension Set {
     fatalError("unavailable function can't be called")
   }
 
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> SetIterator<Element> {
     fatalError("unavailable function can't be called")
   }
@@ -4265,7 +4265,7 @@ extension Dictionary {
     fatalError("unavailable function can't be called")
   }
 
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> DictionaryIterator<Key, Value> {
     fatalError("unavailable function can't be called")
   }

stdlib/public/core/Join.swift

@@ -181,7 +181,7 @@ public struct JoinGenerator<
 > {}
 
 extension JoinedSequence {
-  @available(*, unavailable, renamed: "iterator")
+  @available(*, unavailable, renamed: "makeIterator")
   public func generate() -> JoinedIterator<Base.Iterator> {
     fatalError("unavailable function can't be called")
   }