Add newly released mold version 2.37.1 from upstream
https://github.com/rui314/mold

2.37.1
- Fixed a bug where mold incorrectly reported a spurious "duplicate
  symbol" error when LTO was enabled. (c95476d)

2.37.0
New Features
- If an undefined weak symbol is not resolved to a defined symbol at
  link time, the linker can choose whether to promote the symbol to a
  dynamic symbol or not. If promoted, the weak symbol has another chance
  to be resolved to a defined symbol at load time. Otherwise, it is
  resolved to address 0 at link time. Previously, mold always resolved
  remaining undefined weak symbols in an executable to address 0 at link
  time. Now, you can instruct the linker to promote them to dynamic
  symbols using -z dynamic-undefined-weak. (1822e47)

Bug Fixes and Compatibility Improvements
- [x86-64] The relocation types
  R_X86_64_CODE_4_{GOTPCRELX,GOTTPOFF,GOTPC32_TLSDESC} and
  R_X86_64_CODE_6_GOTTPOFF are now supported. These relocations are for
  Intel APX (Advanced Performance Extensions), which extends the number
  of general-purpose registers from 16 to 32. (83152ac, a17202d)

- [ARM32] The R_ARM_THM_JUMP8 relocation type is now supported.
  (1fbbcec)

- [ARM32] Previously, the .ARM.exidx section (which contains
  exception-handling records) was not subject to garbage collection,
  even when --gc-sections was specified. This prevented all functions
  from being garbage-collected, as they were referenced by
  exception-handling records. Now, mold correctly garbage-collects
  unused .ARM.exidx records and functions. (16f7599)

- Previously, --compress-debug-sections was ignored if
  --separate-debug-file was specified. Now, mold compresses debug
  information sections even when they are in a separate debug file.
  (bab7dd1)

Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>