Fix a bunch of namespace pollution.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78363 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/Alarm.inc b/lib/System/Unix/Alarm.inc
index 28ff1b8..fb42b6c 100644
--- a/lib/System/Unix/Alarm.inc
+++ b/lib/System/Unix/Alarm.inc
@@ -67,6 +67,6 @@
   return 0;
 }
 
-void Sleep(unsigned n) {
+void sys::Sleep(unsigned n) {
   ::sleep(n);
 }