This fixes some inconsistency issues when it comes to inner vs outer windows. On second patch I keep ref again to outer windows from the inner windows, and there are several reasons for this:
* It fixes the existing tests to match native IE.
* It simplifies the code (it's always valid now, no second-guessing or what-ifs needed) and gets rid of `outer_window` in HTMLDocumentNode.
* It **fixes** the `outer_window` in HTMLDocumentNode → it was basically prone to crashes in niche cases since it didn't hold a ref before. We can't couple it to the inner `window` field either, because that one gets detached, and that will fail *existing* tests. For example: `events.c:3224: Test failed: put_URL failed: 80004005`.
* Instead of having to keep outer window refs in specific objects, it's simpler to have it consistent everywhere.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/4312
Valgrind support requires a fork, which I've published to https://gitlab.winehq.org/rbernon/valgrind. The fork implements loading DWARF debug info from PE files, instead of the old and broken upstream PDB support. I've tried to upstream these changes a long time ago but didn't receive any feedback.
I think we could maybe consider keeping a fork, which I'm happy to maintain, as the changes aren't too large. We may want to investigate adding 32-on-64 support, which may require a bit more changes (to VEX specifically, because its amd64 guest doesn't support segment register manipulation).
The changes here are not all related to Valgrind, and I'll create separate MR for those which may make sense independently from Valgrind / GDB.
Also included is a suppression file to silent some annoying false positives, many of which are coming from the cross-stack accesses during syscalls, which are confusing Valgrind's stack heuristics. One can try this out with something like:
`WINELOADERNOEXEC=1 valgrind --suppressions=tools/valgrind.supp wine64/loader/wine64 wine64/programs/winecfg/winecfg.exe`
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v11: ntdll: Avoid writing to invalid memory in i386 unix dispatcher.
ntdll: Fix incorrect i386 call_user_mode_callback CFI.
ntdll: Avoid marking freed block header as undefined for valgrind.
ntdll: Force HEAP_TAIL_CHECKING_ENABLED flag with valgrind.
ntdll: Fix valgrind notifications from ntdll.so.
ntdll: Import valgrind headers for PE side ntdll.
loader: Implement SystemTap RTLD probes.
configure.ac: Check for systemtap sys/sdt.h header.
gitlab: Install systemtap-sdt-dev packages.
ntdll: Maintain a PE module link map and expose it to GDB.
loader: Expose a shadow copy of ld.so link map to GDB.
https://gitlab.winehq.org/wine/wine/-/merge_requests/1074