The functions in Signal.h are now in the llvm::sys namespace - adjust


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16091 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index 76ad6fdd..4810ebd 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -72,7 +72,7 @@
 int main(int argc, char **argv) {
   cl::ParseCommandLineOptions(argc, argv,
 			      " llvm .bc -> .bc modular optimizer\n");
-  PrintStackTraceOnErrorSignal();
+  sys::PrintStackTraceOnErrorSignal();
 
   // Allocate a full target machine description only if necessary...
   // FIXME: The choice of target should be controllable on the command line.
@@ -111,7 +111,7 @@
 
     // Make sure that the Output file gets unlinked from the disk if we get a
     // SIGINT
-    RemoveFileOnSignal(OutputFilename);
+    sys::RemoveFileOnSignal(OutputFilename);
   }
 
   // If the output is set to be emitted to standard out, and standard out is a