Changes required for Android port

Author: johnno1962

CoreFoundation/Base.subproj/ForSwiftFoundationOnly.h

@@ -27,12 +27,9 @@
 #include <CoreFoundation/ForFoundationOnly.h>
 #include <fts.h>
 #include <pthread.h>
-#ifndef __ANDROID__
-#include <execinfo.h>
-#endif
 
-#if __has_include(<malloc/malloc.h>)
-#include <malloc/malloc.h>
+#if __has_include(<execinfo.h>)
+#include <execinfo.h>
 #endif
 
 #if __has_include(<malloc/malloc.h>)

Foundation/NSObject.swift

@@ -13,7 +13,6 @@
 @_exported import Dispatch
 
 import CoreFoundation
-@_exported import Dispatch
 
 /// The `NSObjectProtocol` groups methods that are fundamental to all Foundation objects.
 ///

Foundation/URLSession/http/EasyHandle.swift

@@ -104,7 +104,7 @@ internal protocol _EasyHandleDelegate: class {
     /// - returns: the number of bytes written to the `data` buffer, or `nil` to stop the current transfer immediately.
     func fill(writeBuffer buffer: UnsafeMutableBufferPointer<Int8>) -> _EasyHandle._WriteBufferResult
     /// The transfer for this handle completed.
-    /// - parameter errorCode: An NSURLError code, or `nil` if no error occured.
+    /// - parameter error: An NSError, or `nil` if no error occured.
     func transferCompleted(withError error: NSError?)
     /// Seek the input stream to the given position
     func seekInputStream(to position: UInt64) throws