Updated to most recent version RE2 and remove upstreamed patches.

third_party/re2/patches/remove-static-initializers.patch

-diff --git a/third_party/re2/re2/compile.cc b/third_party/re2/re2/compile.cc
+diff --git a/re2/compile.cc b/re2/compile.cc
 index adb45fd..14e401a 100644
---- a/third_party/re2/re2/compile.cc
-+++ b/third_party/re2/re2/compile.cc
+--- a/re2/compile.cc
++++ b/re2/compile.cc
 @@ -44,7 +44,7 @@ struct PatchList {
    static PatchList Append(Prog::Inst *inst0, PatchList l1, PatchList l2);
  };
  
 -static PatchList nullPatchList;
 +static PatchList nullPatchList = { 0 };
  
  // Returns patch list containing just p.
  PatchList PatchList::Mk(uint32 p) {
 @@ -106,12 +106,13 @@ struct Frag {
@@ skipping 39 matching lines @@
      return NULL;
 @@ -1097,7 +1098,7 @@ Prog* Compiler::CompileSet(const RE2::Options& options, RE2::Anchor anchor,
    c.Setup(pf, options.max_mem(), anchor);
  
    // Compile alternation of fragments.
 -  Frag all = c.WalkExponential(re, kNullFrag, 2*c.max_inst_);
 +  Frag all = c.WalkExponential(re, NullFrag(), 2*c.max_inst_);
    re->Decref();
    if (c.failed_)
      return NULL;
-diff --git a/third_party/re2/re2/re2.cc b/third_party/re2/re2/re2.cc
-index 78978f1..61b88e7 100644
---- a/third_party/re2/re2/re2.cc
-+++ b/third_party/re2/re2/re2.cc
-@@ -34,10 +34,10 @@ namespace re2 {
+diff --git a/re2/re2.cc b/re2/re2.cc
+index 0da886d..b9e44fc 100644
+--- a/re2/re2.cc
++++ b/re2/re2.cc
+@@ -32,10 +32,10 @@ namespace re2 {
  static const int kMaxArgs = 16;
  static const int kVecSize = 1+kMaxArgs;
  
 -const VariadicFunction2<bool, const StringPiece&, const RE2&, RE2::Arg, RE2::FullMatchN> RE2::FullMatch;
 -const VariadicFunction2<bool, const StringPiece&, const RE2&, RE2::Arg, RE2::PartialMatchN> RE2::PartialMatch;
 -const VariadicFunction2<bool, StringPiece*, const RE2&, RE2::Arg, RE2::ConsumeN> RE2::Consume;
 -const VariadicFunction2<bool, StringPiece*, const RE2&, RE2::Arg, RE2::FindAndConsumeN> RE2::FindAndConsume;
 +const VariadicFunction2<bool, const StringPiece&, const RE2&, RE2::Arg, RE2::FullMatchN> RE2::FullMatch = {};
 +const VariadicFunction2<bool, const StringPiece&, const RE2&, RE2::Arg, RE2::PartialMatchN> RE2::PartialMatch = {};
 +const VariadicFunction2<bool, StringPiece*, const RE2&, RE2::Arg, RE2::ConsumeN> RE2::Consume = {};
 +const VariadicFunction2<bool, StringPiece*, const RE2&, RE2::Arg, RE2::FindAndConsumeN> RE2::FindAndConsume = {};
  
  #define kDefaultMaxMem (8<<20)
  
-diff --git a/third_party/re2/re2/variadic_function.h b/third_party/re2/re2/variadic_function.h
+diff --git a/re2/variadic_function.h b/re2/variadic_function.h
 index 8d2b763..7c7d6d5 100644
---- a/third_party/re2/re2/variadic_function.h
-+++ b/third_party/re2/re2/variadic_function.h
+--- a/re2/variadic_function.h
++++ b/re2/variadic_function.h
 @@ -11,8 +11,6 @@ template <typename Result, typename Param0, typename Param1, typename Arg,
            Result (*Func)(Param0, Param1, const Arg* const [], int count)>
  class VariadicFunction2 {
   public:
 -  VariadicFunction2() {}
 -
    Result operator()(Param0 p0, Param1 p1) const {
      return Func(p0, p1, 0, 0);
    }