Log Message:
Update gdb to 8.3.1.

September 20th, 2019: GDB 8.3.1 Released!

    This is a minor corrective release over GDB 8.3, fixing the following
    issues:
      * 20020 (GDB segfault on printing objects)
      * 24454 (nat/x86-linux-dregs.c:146: internal-error: void
        x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped
        (lwp)' failed)
      * 24541 (Incorrect evaluation of systemtap probes due to
        register being signed and probe expression assuming unsigned)
      * 24545 (Symbol loading performance regression with cc1)
      * 24592 (amd64->i386 linux syscall restart problem)
      * 25009 (terminate called after throwing an instance of
        'srchilite::ParserException')
      * 25010 (Calls to error () can cause SIGTTOU to send gdb to the
        background)
      * 25011 (Breakpoints on file reloads broken for PIE
        binaries)
    This corrective release also brings the following testsuite fixes and
    enhancements:
      * 25005 (gdb-caching-proc.exp takes a lot of time on
        skip_opencl_tests)
      * 25016 (Test-case failures for -pie)

May 11th, 2019: GDB 8.3 Released!

    This version of GDB includes the following changes and enhancements:
      * Support for new native configurations (also available as a target
        configuration):
          - RISC-V GNU/Linux (riscv*-*-linux*)
          - RISC-V FreeBSD (riscv*-*-freebsd*)
      * Support for new target configurations:
          - CSKY ELF (csky*-*-elf)
          - CSKY GNU/Linux (csky*-*-linux)
          - NXP S12Z ELF (s12z-*-elf)
          - OpenRISC GNU/Linux (or1k*-*-linux*)
      * Native Windows debugging is only supported on Windows XP or later.
      * The Python API in GDB now requires Python 2.6 or later.
      * GDB now supports terminal styling for the CLI and TUI. Source
        highlighting is also supported by building GDB with GNU Highlight.
      * Experimental support for compilation and injection of C++ source code
        into the inferior (requires GCC 7.1 or higher, built with libcp1.so).
      * GDB and GDBserver now support IPv6 connections.
      * Target description support on RISC-V targets.
      * Various enhancements to several commands:
          - "frame", "select-frame" and "info \ 
frame" commands
          - "info functions", "info types", "info \ 
variables"
          - "info thread"
          - "info proc"
          - System call alias catchpoint support on FreeBSD
          - "target remote" support for Unix Domain sockets.
      * Support for displaying all files opened by a process
      * DWARF index cache: GDB can now automatically save indices of DWARF
        symbols on disk to speed up further loading of the same binaries.
      * Various GDB/MI enhancements.
      * GDBserver on PowerPC GNU/Linux now supports access to the PPR, DSCR,
        TAR, EBB/PMU, and HTM registers.
      * Ada task switching support when debugging programs built with the
        Ravenscar profile added to aarch64-elf.
      * GDB in batch mode now exits with status 1 if the last executed command
        failed.
      * Support for building GDB with GCC's Undefined Behavior Sanitizer.
    See the NEWS file for a more complete and detailed list of what this
    release includes.

December 23rd, 2018: GDB 8.2.1 Released!

    This is a minor corrective release over GDB 8.2, fixing the following
    issues:
      * 23516 (gdb build error under msys+mingw: strip can't handle
        gdb-add-index.exe)
      * 23623 (install-strip fails)
      * 23626 (gdb crashes in upstream rust nil-enum test)
      * 23650 (rust field name access error mentions "foo")
      * 23663 (gdb 8.1.1: undefined rpl_stat function with musl
        toolchains)
      * 23669 (gdb.execute("show commands") doesn't work)
      * 23714 (Command repetition stops working after gdb.execute)
      * 23838 (8.2 regression for invalid -data-directory)
      * 23974 ("info os" crash when specifying invalid object)
      * 23999 (SYMBOL_LANGUAGE assertion failure on AIX)
      * 24003 (Error when binary searching CUs for a specific DIE when
        using DWZ)

September 5th, 2018: GDB 8.2 Released!

    This version of GDB includes the following changes and enhancements:
      * Support for the following target has been added:
          - RiscV ELF (riscv*-*-elf)
      * Support for following targets and native configurations has been
        removed:
          - m88k running OpenBSD (m88*-*-openbsd*)
          - SH-5/SH64 ELF (sh64-*-elf*)
          - SH-5/SH64 (sh*)
          - SH-5/SH64 running GNU/Linux (sh*-*-linux*)
          - SH-5/SH64 running OpenBSD (sh*-*-openbsd*)
      * Various Python API enhancements
      * Aarch64/Linux enhancements:
          - SVE support.
          - Hardware watchpoints improvements for entities stored at unaligned
            addresses.
              - New "c" response to disable the pager for the rest of the
                current command.
              - C expressions can now use _Alignof, and C++ expressions can now
                use alignof.
              - Improved flexibility for loading symbol files.
              - The 'info proc' command nows works on running processes on
                FreeBSD systems as well as core files created on FreeBSD
                systems.
              - A new --enable-codesign=CERT configure option to automatically
                codesign GDB after build (useful on MacOS X).
            See the NEWS file for a more complete and detailed list of what
            this release includes.