GHA: Update packaging

This updates the packaging steps following
swiftlang/swift-installer-scripts#413

This cherry-picks the following PRs:
* GHA: shuffle the Foundation headers #918
* GHA: shuffle more files for Dispatch, Foundation #935
* Create directory before moving items #936
* GHA: adjust the installer build phases #937
* GHA: enable _Builtin_float on android #942
* Installer: Properly include Android platform #944
* Update Android root folder #943
* Packaging: Set productArchitecture #941
* Android: Update Android platform packaging #940

Author: compnerd

.github/workflows/build-toolchain.yml

@@ -544,7 +544,7 @@ jobs:
                   "extra_flags": "-D CMAKE_ANDROID_API=${{ inputs.ANDROID_API_LEVEL }} -D CMAKE_ANDROID_ARCH_ABI=arm64-v8a",
                   "sdk_install_dir": "${env:GITHUB_WORKSPACE}/BuildRoot/Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk/usr",
                   "llvm_cmake_flags": "-D LLVM_HOST_TRIPLE=aarch64-unknown-linux-android${{ inputs.ANDROID_API_LEVEL }}",
-                  "stdlib_cmake_flags": "-D SWIFT_BUILD_CLANG_OVERLAYS_SKIP_BUILTIN_FLOAT=YES -D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=aarch64"
+                  "stdlib_cmake_flags": "-D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=aarch64"
                 },
                 {
                   "arch": "armv7",
@@ -563,7 +563,7 @@ jobs:
                   "extra_flags": "-D CMAKE_ANDROID_API=${{ inputs.ANDROID_API_LEVEL }} -D CMAKE_ANDROID_ARCH_ABI=armeabi-v7a",
                   "sdk_install_dir": "${env:GITHUB_WORKSPACE}/BuildRoot/Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk/usr",
                   "llvm_cmake_flags": "-D LLVM_HOST_TRIPLE=armv7a-unknown-linux-androideabi${{ inputs.ANDROID_API_LEVEL }}",
-                  "stdlib_cmake_flags": "-D SWIFT_BUILD_CLANG_OVERLAYS_SKIP_BUILTIN_FLOAT=YES -D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=armv7-a"
+                  "stdlib_cmake_flags": "-D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=armv7-a"
                 },
                 {
                   "arch": "i686",
@@ -582,7 +582,7 @@ jobs:
                   "extra_flags": "-D CMAKE_ANDROID_API=${{ inputs.ANDROID_API_LEVEL }} -D CMAKE_ANDROID_ARCH_ABI=x86",
                   "sdk_install_dir": "${env:GITHUB_WORKSPACE}/BuildRoot/Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk/usr",
                   "llvm_cmake_flags": "-D LLVM_HOST_TRIPLE=i686-unknown-linux-android${{ inputs.ANDROID_API_LEVEL }}",
-                  "stdlib_cmake_flags": "-D SWIFT_BUILD_CLANG_OVERLAYS_SKIP_BUILTIN_FLOAT=YES -D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=i686"
+                  "stdlib_cmake_flags": "-D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=i686"
                 },
                 {
                   "arch": "x86_64",
@@ -601,7 +601,7 @@ jobs:
                   "extra_flags": "-D CMAKE_ANDROID_API=${{ inputs.ANDROID_API_LEVEL }} -D CMAKE_ANDROID_ARCH_ABI=x86_64",
                   "sdk_install_dir": "${env:GITHUB_WORKSPACE}/BuildRoot/Library/Developer/Platforms/Android.platform/Developer/SDKs/Android.sdk/usr",
                   "llvm_cmake_flags": "-D LLVM_HOST_TRIPLE=x86_64-unknown-linux-android${{ inputs.ANDROID_API_LEVEL }}",
-                  "stdlib_cmake_flags": "-D SWIFT_BUILD_CLANG_OVERLAYS_SKIP_BUILTIN_FLOAT=YES -D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=x86_64"
+                  "stdlib_cmake_flags": "-D LLVM_ENABLE_LIBCXX=YES -D SWIFT_USE_LINKER=lld -D CMAKE_SYSTEM_PROCESSOR=x86_64"
                 }
               ]
             }