package/musl: bump to version 1.2.2

package/musl: bump to version 1.2.2

Drop 0003-rewrite-wcsnrtombs-to-fix-buffer-overflow-and-other-.patch
as it is a backport of upstream commit
3ab2a4e02682df1382955071919d8aa3c3ec40d4 which is part of the 1.2.2
release.

1.2.2 release notes

major changes:
- child restrictions lifted after fork of multithreaded parent

new features:
- _Fork function (POSIX-future)
- reallocarray function (extension from OpenBSD, now widespread)
- gettid function (kernel tid as supported concept)
- SIGEV_THREAD_ID sigevent API (Linux extension)
- tcgetwinsize and tcsetwinsize functions (POSIX-future)

performance:
- faster software sqrt on archs without native sqrt instruction

compatibility:
- realpath no longer depends on procfs availability & accuracy
- time zone parser now always prefers 64-bit tables if present
- crypt_blowfish now supports $2b$ prefix
- res_query now reports errors via h_errno
- set*id and setrlimit are now safe in vforked/cloned child
- setgroups now applies to all threads
- dlopen debugger notification is improved, should work with lldb
- setrlimit no longer needs __synccall broadcast on linux 2.6.36+
- faccessat with AT_EACCESS no longer needs child process on linux 5.8+

bugs fixed:
- buffer overflow and infinite loop errors in wcsnrtombs (CVE-2020-28928)
- sem_close unmapped still-referenced semaphores
- fork of process with active aio could deadlock or crash paren
- pthread_cond_wait was broken with priority-inheritance mutex
- getgrouplist wrongly failed when nscd reported an empty list
- abort could leak modified SIGABRT disposition to fork or posix_spawn child
- regression with mallocng: malloc_usable_size(0) crashed
- readlink wrongly gave EINVAL on zero length dest buffer
- sqrtl was severely inaccurate (not correctly rounded) on ldquad archs
- assert failure wrongly flushed stdio (possible deadlock)
- MUSL_LOCPATH search was broken with multiple components
- missing newline in herror output
- possible deadlock in pthread_exit with pshared mutex or barrier usage
- pthread_mutexattr_getprotocol didn't read back protocol
- v4l2 ioctl translation for pre-time64 kernels didn't work

arch-specific bugs fixed:
- x86_64 longjmp failed to handle 0 argument reliably
- i386 __set_thread_area fallback for pre-2.6 kernels didn't work
- missing O_LARGEFILE macro value on x86_64, x32, mips64
- unpredictable s390x breakage from failure to preserve call-saved registers

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>