Migrate FileCheck to FileCheck %s in tests, extra fixes for the swift-3.0-branch

Author: gribozavr

test/1_stdlib/BitwiseOperationsType.swift

@@ -1,4 +1,4 @@
-// RUN: %target-run-simple-swift | FileCheck %s
+// RUN: %target-run-simple-swift | %FileCheck %s
 // REQUIRES: executable_test
 struct MyInt32 : BitwiseOperations {
   var underlying: Int32

test/1_stdlib/Float.swift

@@ -3,11 +3,11 @@
 
 // RUN: echo "typealias TestFloat = Float" > %t/float_type.swift
 // RUN: %target-build-swift %t/main.swift %t/float_type.swift -o %t/float.out
-// RUN: %target-run %t/float.out | FileCheck %s
+// RUN: %target-run %t/float.out | %FileCheck %s
 
 // RUN: echo "typealias TestFloat = Double" > %t/double_type.swift
 // RUN: %target-build-swift %t/main.swift %t/double_type.swift -o %t/double.out
-// RUN: %target-run %t/double.out | FileCheck %s
+// RUN: %target-run %t/double.out | %FileCheck %s
 // REQUIRES: executable_test
 
 //===---

test/1_stdlib/Zip.swift

@@ -1,4 +1,4 @@
-// RUN: %target-run-simple-swift | FileCheck %s
+// RUN: %target-run-simple-swift | %FileCheck %s
 // REQUIRES: executable_test
 
 // FIXME(prext): remove this file when protocol extensions land.

test/DebugInfo/trap-optimized.swift

@@ -1,4 +1,4 @@
-// RUN: %target-swift-frontend -O -primary-file %s -emit-ir -g -o - | FileCheck %s
+// RUN: %target-swift-frontend -O -primary-file %s -emit-ir -g -o - | %FileCheck %s
 import StdlibUnittest
 // CHECK-LABEL: define{{.*}}2fn
 public var i : UInt32 = 1