Allocator restructuring - #4998
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Right now, our two allocator implementations are scattered around the tree in "stdalloc.h" and "win32/w32_crtdbg_stacktrace.h". Start grouping them together in a single directory "allocators/", similar to how e.g. our streams are organized.
The Windows-specific crtdbg allocator is currently mixed into the crtdbg stacktracing compilation unit, making it harder to find than necessary. Extract it and move it into the new "allocators/" subdirectory to improve discoverability. This change means that the crtdbg compilation unit is now compiled unconditionally, whereas it has previously only been compiled on Windows platforms. Thus we now have additional guards around the code so that it will only be compiled if GIT_MSVC_CRTDBG is defined. This also allows us to move over the fallback-implementation of `git_win32_crtdbg_init_allocator` into the same compilation unit.
In commit 6e0dfc6 (Make stdalloc__reallocarray call stdalloc__realloc, 2019-02-16), we have changed the stdalloc allocator to reuse `stdalloc__realloc` to implement `stdalloc__reallocarray`. This commit is making the same change for the Windows-specific crtdbg allocator to avoid code duplication.
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Fixed compilation with MSVC |
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I've been annoyed by our two allocators being located at seemingly arbitrary locations. Instead, I propose to move them into a common "allocators/" subdirectory, similar to our transports or streams.