Revert "[stdlib] Remove workarounds for fixed bug"

This reverts commit r30148, since it regresses the following tests:

   Swift :: ClangModules/script.swift
   Swift :: Interpreter/currying_protocols.swift
   Swift :: Interpreter/if_expr.swift
   Swift :: Interpreter/protocol_extensions.swift
   Swift :: Interpreter/weak.swift
   Swift :: Interpreter/weak_objc.swift
   Swift :: PlaygroundTransform/array_did_set.swift
   Swift :: PlaygroundTransform/print.swift

Swift SVN r30159

Author: jopamer

stdlib/public/core/OutputStream.swift

@@ -379,7 +379,7 @@ public func toDebugString<T>(x: T) -> String {
 @inline(never)
 @_semantics("stdlib_binary_only")
 public func print<T, TargetStream : OutputStreamType>(
-  value: T, inout _ target: TargetStream, appendNewline: Bool = true
+  value: T, inout _ target: TargetStream, appendNewline: Bool
 ) {
   target._lock()
   _print_unlocked(value, &target)
@@ -389,6 +389,15 @@ public func print<T, TargetStream : OutputStreamType>(
   target._unlock()
 }
 
+@inline(never)
+@_semantics("stdlib_binary_only")
+public func print<T, TargetStream : OutputStreamType>(
+  value: T, inout _ target: TargetStream
+) {
+  // FIXME: workaround for rdar://20775669
+  print(value, &target, appendNewline: true)
+}
+
 /// Writes the textual representation of `value`, and an optional newline,
 /// into the standard output.
 ///
@@ -405,7 +414,7 @@ public func print<T, TargetStream : OutputStreamType>(
 ///   newline.
 @inline(never)
 @_semantics("stdlib_binary_only")
-public func print<T>(value: T, appendNewline: Bool = true) {
+public func print<T>(value: T, appendNewline: Bool) {
   var target = _Stdout()
   target._lock()
   _print_unlocked(value, &target)
@@ -415,6 +424,13 @@ public func print<T>(value: T, appendNewline: Bool = true) {
   target._unlock()
 }
 
+@inline(never)
+@_semantics("stdlib_binary_only")
+public func print<T>(value: T) {
+  // FIXME: workaround for rdar://20775669
+  print(value, appendNewline: true)
+}
+
 //===----------------------------------------------------------------------===//
 // debugPrint()
 //===----------------------------------------------------------------------===//