* d/rules: Exclude .git from gdb-source package.
* d/control{,.in}: Bump ia64 B-D to libunwind8-dev for transition.
* d/NEWS: Fix version number so lintian will shut up about it.
* d/patches:
  - Remove no-longer-used patches:
    + 0000-tui-skip-registers-pr-tui-13073.patch: Old Backport
    + 0001-netbsd-init-match-property-field.patch: Old Backport
    + 0002-add-cpu-to-source-release.patch: Old Backport
    + m68k-thread-debugging.patch: Old Backport or Merged Upstream
    + gdbinit-ownership.patch: handled differently upstream
    + member-field-symtab.patch: the patched code disappeared
  - Drop patches for problems that have gone away:
    + dwarf2-cfi-warning.patch: I'm not seeing any spam without this.
    + linux-clear-thread-list.patch: #303736 is gone even without this.
  - Add/reformat metadata:
    + gdb-6.5-bz185337-resolve-tls-without-debuginfo-v2.patch
    + solve_PATH_MAX_issue.patch
    + linuxthreads_signal_handling.patch
* d/control{,.in}: Reformat relationship fields.
* d/rules:
  - Allow gdb-minimal to use expat.
  - Get hardening flags working.
  - Explicitly configure gdb64 --with-expat.
  - s/--with-libunwind/--with-libunwind-ia64/; the former is depracated.
  - Make gdb --version report exact package version much as
    gcc --version does.
* Build gdbserver on arm64.
* Avoid identical short or long descriptions between packages.
* Remove stray "The" from short descriptions.