Upstreamed changes from cl/579854752.
The cross-compiler checks some things that are check on Windows.
* Correct capitalization of filenames in includes.
* Field initialization order in constructors.
In the cross compilation process, some binaries are run on the host.
This unveiled missing `UnwindingRecords::GenerateRecordsInto`.
Finally, when emitting blob data with a symbol in assembly, the
`.type` directive is not supported but the format should still be
unix style assemble. So this CL introduces "win_gnu". This tool is
directly invoked from the build-rules in cl/579854752, and will not be
used until we address https://github.com/dart-lang/sdk/issues/28617.
TEST=windows bots
Change-Id: I94256589e8c231b45b8e14a63727c782416c2e98
Cq-Include-Trybots: luci.dart.try:vm-aot-win-debug-arm64-try,vm-aot-win-debug-x64c-try,pkg-win-release-try,pkg-win-release-arm64-try,vm-win-debug-arm64-try,vm-win-debug-x64c-try,vm-win-debug-x64-try,vm-msvc-windows-try
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/335520
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Martin Kustermann <kustermann@google.com>
Daco Harkes
84404136e9