Check in a quick sed script to reduce Mac build logs.

This strips out most of the command lines, making it look a little
more like the Linux output.

TEST=download mac build output;
  ./build/sanitize-mac-build-log.sed < build-output
  and verify it is shorter

Review URL: http://codereview.chromium.org/5678006

git-svn-id: http://src.chromium.org/svn/trunk/src/build@69027 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

sanitize-mac-build-log.sed

@@ -0,0 +1,22 @@
+#!/bin/sed -f
+
+# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# Use this sed script to reduce a Mac build log into something readable.
+
+# Drop uninformative lines.
+/^distcc/d
+/^Check dependencies/d
+/^    setenv /d
+/^    cd /d
+/^make: nothing to be done/d
+
+# Xcode prints a short "compiling foobar.o" line followed by the lengthy
+# full command line.  These deletions drop the command line.
+\|^    /Developer/usr/bin/|d
+
+# Shorten the "compiling foobar.o" line.
+s|^Distributed-CompileC \(.*\) normal i386 c++ com.apple.compilers.gcc.4_2|    CC \1|
+s|^CompileC \(.*\) normal i386 c++ com.apple.compilers.gcc.4_2|    CC \1|