[tools] Use WithColor for printing errors.

Use convenience helpers in WithColor to print errors, warnings and notes
in a few more tools.

llvm-svn: 330524
diff --git a/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp b/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
index 08ca6e0..1252ed5 100644
--- a/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
+++ b/llvm/tools/llvm-bcanalyzer/llvm-bcanalyzer.cpp
@@ -37,6 +37,7 @@
 #include "llvm/Support/ManagedStatic.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/SHA1.h"
+#include "llvm/Support/WithColor.h"
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
@@ -444,7 +445,7 @@
 /// ReportError - All bitcode analysis errors go through this function, making this a
 /// good place to breakpoint if debugging.
 static bool ReportError(const Twine &Err) {
-  errs() << Err << "\n";
+  WithColor::error() << Err << "\n";
   return true;
 }