Reapply D77381084 / #156964: Rename torch::standalone to headeronly (#157251)

Was reverted due to internal failure which should be fixed now. I believe Jane wants this reapplied and picked to release, and she's out this week.

Original summary:

headeronly is more clear, let's change the name before anyone depends on standalone

Differential Revision: [D77520173](https://our.internmc.facebook.com/intern/diff/D77520173/)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/157251
Approved by: https://github.com/janeyx99, https://github.com/Skylion007, https://github.com/desertfire

.lintrunner.toml

@@ -87,7 +87,7 @@ include_patterns = [
     'torch/csrc/**/*.cpp',
     'torch/nativert/**/*.h',
     'torch/nativert/**/*.cpp',
-    'torch/standalone/**/*.h',
+    'torch/headeronly/**/*.h',
     'test/cpp/**/*.h',
     'test/cpp/**/*.cpp',
 ]
@@ -241,7 +241,7 @@ include_patterns = [
     'torch/nativert/*.cpp',
     'torch/nativert/**/*.h',
     'torch/nativert/**/*.cpp',
-    'torch/standalone/**/*.h',
+    'torch/headeronly/**/*.h',
 ]
 exclude_patterns = [
     # The negative filters below are to exclude files that include onnx_pb.h or

buckbuild.bzl

@@ -944,7 +944,7 @@ def define_buck_targets(
             [
                 ("torch/csrc/api/include", "torch/**/*.h"),
                 ("", "torch/csrc/**/*.h"),
-                ("", "torch/standalone/**/*.h"),
+                ("", "torch/headeronly/**/*.h"),
                 ("", "torch/script.h"),
                 ("", "torch/library.h"),
                 ("", "torch/custom_class.h"),

c10/macros/Export.h

@@ -5,7 +5,7 @@
 #include <c10/macros/cmake_macros.h>
 #endif // C10_USING_CUSTOM_GENERATED_MACROS
 
-#include <torch/standalone/macros/Export.h>
+#include <torch/headeronly/macros/Export.h>
 
 // This one is being used by libtorch.so
 #ifdef CAFFE2_BUILD_MAIN_LIB

c10/macros/build.bzl

@@ -13,7 +13,7 @@ def define_targets(rules):
         local_defines = ["C10_BUILD_MAIN_LIB"],
         visibility = ["//visibility:public"],
         deps = [
-            "//torch/standalone:torch_standalone_headers",
+            "//torch/headeronly:torch_headeronly",
         ],
     )
 

c10/ovrsource_defs.bzl

@@ -74,7 +74,7 @@ def define_c10_ovrsource(name, is_mobile):
             ],
         }),
         exported_deps = [
-            "//xplat/caffe2/torch/standalone:torch_standalone_headers",
+            "//xplat/caffe2/torch/headeronly:torch_headeronly",
             ":ovrsource_c10_cmake_macros.h",
             "//arvr/third-party/gflags:gflags",
             "//third-party/cpuinfo:cpuinfo",

c10/util/build.bzl

@@ -34,7 +34,7 @@ def define_targets(rules):
         visibility = ["//visibility:public"],
         deps = [
             ":bit_cast",
-            "//torch/standalone:torch_standalone_headers",
+            "//torch/headeronly:torch_headeronly",
             "//c10/macros",
             "@fmt",
             "@moodycamel//:moodycamel",
@@ -92,7 +92,7 @@ def define_targets(rules):
             ],
         ),
         deps = [
-            "//torch/standalone:torch_standalone_headers",
+            "//torch/headeronly:torch_headeronly",
         ],
         visibility = ["//visibility:public"],
     )

caffe2/CMakeLists.txt

@@ -1299,7 +1299,7 @@ target_include_directories(torch_cpu PRIVATE ${ATen_CPU_INCLUDE})
 
 target_include_directories(torch_cpu PRIVATE
   ${TORCH_SRC_DIR}/csrc
-  ${TORCH_SRC_DIR}/standalone)
+  ${TORCH_SRC_DIR}/headeronly)
 
 target_include_directories(torch_cpu PRIVATE
   ${TORCH_ROOT}/third_party/miniz-3.0.2)
@@ -1320,7 +1320,7 @@ target_include_directories(torch_cpu PRIVATE
 
 install(DIRECTORY
   "${TORCH_SRC_DIR}/csrc"
-  "${TORCH_SRC_DIR}/standalone"
+  "${TORCH_SRC_DIR}/headeronly"
   DESTINATION ${TORCH_INSTALL_INCLUDE_DIR}/torch
   FILES_MATCHING PATTERN "*.h" PATTERN "*.hpp")
 

test/cpp/aoti_abi_check/test_macros.cpp

@@ -1,6 +1,6 @@
 #include <gtest/gtest.h>
 
-#include <torch/standalone/macros/Export.h>
+#include <torch/headeronly/macros/Export.h>
 
 namespace torch {
 namespace aot_inductor {

torch/header_only_apis.txt

@@ -48,5 +48,5 @@ maximum
 minimum
 size
 
-# torch/standalone/macros/Export.h
+# torch/headeronly/macros/Export.h
 C10_API

torch/headeronly/BUILD.bazel

@@ -1,7 +1,7 @@
 load("@rules_cc//cc:defs.bzl", "cc_library")
 
 cc_library(
-    name = "torch_standalone_headers",
+    name = "torch_headeronly",
     hdrs = glob([
         "**/*.h"
     ]),