[roll] Roll fuchsia [superproject] Roll llvm-project/libc 4497e5d..e5b3ce5 (32 commits)

e5b3ce5 [libc][docs] Document printf support on the GPU target (#99241)
bccd47e [libc] Implement `clock_gettime` for the monotonic clock on the GPU (#99067)
50fe849 [libc] Add `strerror` and `strerror_k` to the GPU (#99083)
4174a66 [libc] newheadergen: script adjusted for cmake (#98825)
ce9997c [libc] Fix old unittests for wchar tests (#99060)
c979699 [libc][stdlib] Implement heap sort. (#98582)
286ea6d [libc] add a simple TTAS spin lock (#98846)
dbc459e [libc] Enable 'wchar.h' for the GPU (#98973)
5717e25 [libc] newheadergen: added assert.yaml (#98826)
9197636 [libc][math] Optimize nearest integer functions using builtins when available (#98376)
4d713b7 [libc][NFC] Fix printed test time in 32-bit systems (#98922)
891f9d9 [libc] Fix warnings emitted by GCC (#98751)
55bf1be [libc] Mark external baremetal I/O symbols as extern "C" (#98871)
6bb49a9 [libc] Use Atomics in GPU Benchmarks (#98842)
cf49b86 [libc] Extend the baremetal I/O vendor ABI (#98683)
cdd8c96 [libc] Fix signbit include test. (#98793)
cfa8a67 [libc] Include realloc in baremetal entrypoints (#98780)
8d306b0 [libc][math] implement `signbit` and math macro unit tests (#97791)
8227aba [libc] Add libc_include_tests suites to check-libc target. (#98749)
b32024c [libc] Mark all __llvm_libc_errno definitions as noexcept (#98762)
606d393 [libc] Mark internal __llvm_libc_errno as noexcept (#98760)
35c0355 [libc] Remove src/errno/errno.h (#98759)
2fe2edc [libc] fix dependencies for fprintf (#98752)
a8c82cb [libc] Support configurable errno modes (#98287)
4b196b2 [libc] always compile hash_test with -O3 (#98718)
25dc526 [libc] Stop using LLVM's `stdout` in overlay mode tests
54824ad [libc] suppress uninitialized werrors (#98710)
22cc548 [libc] Fix missing printf dependencies
6f539a1 [libc] Remove warnings on default values
6a08c2f [libc] Implement (v|f)printf on the GPU (#96369)
44be0a5 [libc] newheadergen: created sys folder for yaml files, make appropriate updates to CMake file for sys folder (#98693)
9533ae9 [NVPTX] Implement variadic functions using IR lowering (#96015)

GitOrigin-RevId: 1b3e24a5914740f13c50e17f56404ec6b6d881a5
Roller-URL: https://ci.chromium.org/b/8742208043884935729
CQ-Do-Not-Cancel-Tryjobs: true
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1082645
Original-Revision: 4df25aaf9b28dce9dcef26787ccc2fa734b0e39c
Change-Id: I03d879563e2d6b6c7920ed28a568994851a37135