[rx][iOS] Do not try to generate doc comments with build properties, they don't work so far.
[corlib] Mark all promise-style task exceptions observed. Fixes #17015
Initialize icalls before exceptions.

This commit licensed as MIT/X11.
Merge pull request #865 from madewokherd/icallinit

Initialize icalls before exceptions.
Allow creating MemoryMappedFiles with an in-memory and on-disk capacity of zero on Unix.

This is necessary to map special files such as /dev/mem.
[runtime] Update copyright date in --version.
[jit] Allocate MonoJumpInfo structures using alloc0.
Fix mobile builds.
[aot] Don't pass -W option to the clang assembler, it causes a warning.
[jit] Disable tail calls in AOT mode so methods using tail calls can be AOT-ed.
[PCL]: Add ReadOnlyDictionary type-forwarder for XI.  Fixes #16951.
[jit] Pass flags to mini_method_compile () as an enum.
[aot] Disable aot for methods with tail calls in non full-aot mode, instead of compiling them without tail calls.
[jit] Fix the loading of arguments received on the stack on arm.
[runtime] Make mono_class_is_assignable_from_slow handle arrays.
[runtime] Make mono_class_is_assignable_from lazy resolve its arguments.

Drop the requirement to call mono_class_init in mono_class_is_assignable_from.

The solution is not ideal as it relies on mono_class_implement_interface_slow which
is significantly slower than the regular checks and is less tested / complete.

The right approach here would be to promote setup_offsets to have proper laziness and
not be hidden behind vtable initialization. Until this happen we can't drop the
usage of the slow variant here.
[runtime] ves_icall_type_is_assignable_from should not init its arguments as this is done properly by its callees.
[xbuild] Build & install MSBuild 12.0 assemblies
[xbuild] Install data files for xbuild 12
[xbuild] Make xbuild script point to xbuild 12