Updated to most recent version RE2 and remove upstreamed patches.

third_party/re2/util/util.h

Index: third_party/re2/util/util.h
diff --git a/third_party/re2/util/util.h b/third_party/re2/util/util.h
index 11b5f4a29c59f096dde17898bba17cea39f19e7d..8f5404086119f0f584d14c97c78641041d3df7d7 100644
--- a/third_party/re2/util/util.h
+++ b/third_party/re2/util/util.h
@@ -16,6 +16,7 @@
 #include <sys/time.h>
 #endif
 #include <time.h>
+#include <ctype.h>	// For isdigit, isalpha.
 
 // C++
 #include <vector>
@@ -89,6 +90,19 @@ template<bool> struct CompileAssert {};
 
 #define arraysize(array) (sizeof(array)/sizeof((array)[0]))
 
+// Fake lock annotations.  For real ones, see
+// http://code.google.com/p/data-race-test/
+#ifndef ANNOTATE_PUBLISH_MEMORY_RANGE
+#define ANNOTATE_PUBLISH_MEMORY_RANGE(a, b)
+#define ANNOTATE_IGNORE_WRITES_BEGIN()
+#define ANNOTATE_IGNORE_WRITES_END()
+#define ANNOTATE_BENIGN_RACE(a, b)
+#define NO_THREAD_SAFETY_ANALYSIS
+#define ANNOTATE_HAPPENS_BEFORE(x)
+#define ANNOTATE_HAPPENS_AFTER(x)
+#define ANNOTATE_UNPROTECTED_READ(x) (x)
+#endif
+
 class StringPiece;
 
 string CEscape(const StringPiece& src);