[strace/strace] Release v5.5 - strace 5.5

[esyr]

Noteworthy changes in strace 5.5 (2020-02-06)
=============================================

* Improvements
  * Added `-e trace=%creds` option for tracing syscalls related to process
    credentials.
  * Enhanced decoding of `arch_prctl`, `keyctl`, `io_uring_register`, `io_uring_setup`,
    and `perf_event_open` syscalls.
  * Enhanced decoding of `BPF_PROG_LOAD` `bpf` syscall command.
  * Updated decoding of `clone3` syscall to match Linux 5.5.
  * Implemented decoding of `TCA_ACT_FLAGS` and `TCA_STATS_PKT64` netlink
    attributes.
  * Updated lists of `AUDIT_*`, `BPF_*`, `CLONE_*`, `KEY_*`, `KVM_*`, `PPC_PTRACE_*`,
    `SCTP_*`, `STATX_*`, `TIPC_*`, `V4L2_*`, and `*_MAGIC` constants.
  * Updated lists of ioctl commands from Linux 5.5.
  * Enhanced manual page and `strace --help` output.

* Bug fixes
  * Fixed stack trace printing for early syscalls when `strace` is configured
    to use libdw backend for stack tracing (addresses [https://bugzilla.redhat.com/1788636](Fedora bug #1788636)).
  * Fixed stack trace caching when `--seccomp-bpf` option is specified.
  * Fixed potentially unaligned access in decoder of `SO_TIMESTAMP*_NEW`
    control messages.
  * Fixed decoding of `NDA_LLADDR` netlink neighbor table attribute.
  * Fixed build of mpers support when `CFLAGS` contains `-flto`.
  * Fixed build on no-MMU architectures.
  * Fixed build with glibc-2.31 and Linux kernel headers < 5.3.
  * Fixed tests for glibc-2.31.

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

* Andreas Schwab
* Andrey Zax
* Baruch Siach
* Chunmei Xu
* Dmitry V. Levin
* Eugene Syromyatnikov
* Gleb Fotengauer-Malinovskiy
* Jamal Hadi Salim
* Khem Raj
* Paul Chaignon
* Pavel Zhukov
* Quentin Monnet
* Rich Felker
* Thomas Deutschmann
* Vineet Gupta
* Vladimir D. Seleznev

Please refer to the CREDITS file for the full list of strace contributors.

Downloads
=========

**Please ignore so called "Source code" links provided by github, they are useless.**

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