Remove residual blank line at start of Makefile

This is a residual of the $FreeBSD$ removal.

MFC After: 3 days (though I'll just run the command on the branches)
Sponsored by: Netflix

Merge llvm-project main llvmorg-18-init-15088-gd14ee76181fb

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-15088-gd14ee76181fb.

Merge llvm-project main llvmorg-18-init-15088-gd14ee76181fb

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-18-init-15088-gd14ee76181fb.

PR: 276104
MFC after: 1 month

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Add missing sources to libclang_rt Makefiles, clean up unneeded ones

During the llvm-17 merge, a few new source files were not added to the
libclang_rt Makefiles, in particular sanitizer_thread_arg_

Add missing sources to libclang_rt Makefiles, clean up unneeded ones

During the llvm-17 merge, a few new source files were not added to the
libclang_rt Makefiles, in particular sanitizer_thread_arg_retval.cpp
which is now required for AddressSanitizer and MemorySanitizer. Also,
MemorySanitizer now requires msan_dl.cpp.

While here, clean out a number of source files that compile into nothing
(because they only contain non-FreeBSD parts). Also, remove a duplicated
instance of tsan_new_delete.cpp from libclang_rt.tsan, since it is only
supposed to live in libclang_rt.tsan_cxx.

PR: 275854
Reported by: jbeich
MFC after: 1 month

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Merge llvm-project main llvmorg-17-init-19304-gd0b54bb50e51

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-17-init-19304-gd0b54bb50e51, t

Merge llvm-project main llvmorg-17-init-19304-gd0b54bb50e51

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-17-init-19304-gd0b54bb50e51, the
last commit before the upstream release/17.x branch was created.

PR: 273753
MFC after: 1 month

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Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

Merge llvm-project main llvmorg-14-init-10223-g401b76fdf2b3

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14-init-10223-g401b76fdf2b3.

PR: 261742
MFC af

Merge llvm-project main llvmorg-14-init-10223-g401b76fdf2b3

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14-init-10223-g401b76fdf2b3.

PR: 261742
MFC after: 2 weeks

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Merge llvm-project release/13.x llvmorg-13.0.0-rc1-97-g23ba3732246a

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-13.0.0-rc1-97-g23ba3732246a.

PR: 25820

Merge llvm-project release/13.x llvmorg-13.0.0-rc1-97-g23ba3732246a

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-13.0.0-rc1-97-g23ba3732246a.

PR: 258209
MFC after: 2 weeks

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Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp
10.0.0-rc3 c290cb61fdc.

Release notes for llvm, clang, lld and libc++ 10.0.0 will become
available here:

https://releases.llv

Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp
10.0.0-rc3 c290cb61fdc.

Release notes for llvm, clang, lld and libc++ 10.0.0 will become
available here:

https://releases.llvm.org/10.0.0/docs/ReleaseNotes.html
https://releases.llvm.org/10.0.0/tools/clang/docs/ReleaseNotes.html
https://releases.llvm.org/10.0.0/tools/lld/docs/ReleaseNotes.html
https://releases.llvm.org/10.0.0/projects/libcxx/docs/ReleaseNotes.html

PR: 244251
MFC after: 6 weeks

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Update build glue for libclang_rt.

Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp
9.0.0 final release r372316.

Release notes for llvm, clang, lld and libc++ 9.0.0 are available here:

https://releases.llvm.or

Merge llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and openmp
9.0.0 final release r372316.

Release notes for llvm, clang, lld and libc++ 9.0.0 are available here:

https://releases.llvm.org/9.0.0/docs/ReleaseNotes.html
https://releases.llvm.org/9.0.0/tools/clang/docs/ReleaseNotes.html
https://releases.llvm.org/9.0.0/tools/lld/docs/ReleaseNotes.html
https://releases.llvm.org/9.0.0/projects/libcxx/docs/ReleaseNotes.html

PR: 240629
MFC after: 1 month

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Update libclang_rt:
* Add cfi, dd, fuzzer and xray
* Update arch support
* Update OptionalObsoleteFiles.inc