Updated to most recent version RE2 and remove upstreamed patches.

third_party/re2/util/logging.h

Index: third_party/re2/util/logging.h
diff --git a/third_party/re2/util/logging.h b/third_party/re2/util/logging.h
index 4478f9b219b44eb4d74ed0d3acbacc9b3caa5eec..d0a2d875b6e02e4ecfec5ad690e467ced67116f3 100644
--- a/third_party/re2/util/logging.h
+++ b/third_party/re2/util/logging.h
@@ -59,11 +59,8 @@ class LogMessage {
   void Flush() {
     stream() << "\n";
     string s = str_.str();
-#ifdef WIN32
-    write(2, s.data(), static_cast<unsigned int>(s.size()));
-#else
-    if(write(2, s.data(), s.size()) < 0) {}  // shut up gcc
-#endif
+    int n = (int)s.size(); // shut up msvc
+    if(write(2, s.data(), n) < 0) {}  // shut up gcc
     flushed_ = true;
   }
   ~LogMessage() {