Update third-party patches (ray-project#203)

thirdparty/download_thirdparty.bat

@@ -10,10 +10,11 @@
 		git -C "grpc"                                              submodule update --init "third_party/protobuf"
 		git -C "grpc"                                              submodule update --init "third_party/nanopb"
 		git -C "grpc"                                              submodule update --init "third_party/zlib"
-		git -C "grpc"                                              apply "%~dp0windows-patches/grpc-projects.patch"
-		git -C "grpc/third_party/protobuf"                         apply "%~dp0windows-patches/protobuf-projects.patch"
-		git -C "arrow/cpp/thirdparty/flatbuffers"                  apply "%~dp0windows-patches/flatbuffers-projects.patch"
-		git -C "arrow/cpp/thirdparty/parquet"                      apply "%~dp0windows-patches/parquet-endian.patch"
-		git -C "python"                                            apply "%~dp0windows-patches/python-pyconfig.patch"
+		git -C "grpc"                                              apply "%~dp0patches/grpc-source.patch"
+		git -C "grpc"                                              apply "%~dp0patches/windows/grpc-projects.patch"
+		git -C "grpc/third_party/protobuf"                         apply "%~dp0patches/windows/protobuf-projects.patch"
+		git -C "arrow/cpp/thirdparty/flatbuffers"                  apply "%~dp0patches/windows/flatbuffers-projects.patch"
+		git -C "arrow/cpp/thirdparty/parquet"                      apply "%~dp0patches/windows/parquet-endian.patch"
+		git -C "python"                                            apply "%~dp0patches/windows/python-pyconfig.patch"
 	@PopD
 @EndLocal

thirdparty/patches/.gitattributes

@@ -0,0 +1 @@
+*.patch text eol=lf

thirdparty/patches/grpc-source.patch

@@ -0,0 +1,17 @@
+diff --git a/src/cpp/server/create_default_thread_pool.cc b/src/cpp/server/create_default_thread_pool.cc
+index f3b07ec..ede18cb
+--- a/src/cpp/server/create_default_thread_pool.cc
++++ b/src/cpp/server/create_default_thread_pool.cc
+@@ -40,8 +40,12 @@
+ namespace grpc {
+
+ ThreadPoolInterface* CreateDefaultThreadPool() {
++#ifdef NDEBUG
+   int cores = gpr_cpu_num_cores();
+   if (!cores) cores = 4;
++#else
++  int cores = 0;
++#endif
+   return new DynamicThreadPool(cores);
+ }
+