xclipboard-1.1.3-bp151.3.1

- Update to version 1.1.3:
  + Fix some size/sign conversion warnings from clang.
  + Delete trailing whitespace from source files.
  + Replace malloc(strlen)+strcpy with strdup.
  + Convert last sprintf to snprintf.
  + Rename state argument to SetButton to not shadow global state
    variable.
  + Mark Quit functions as _X_NORETURN, as suggested by
  - Wmissing-noreturn.
  + Don't rely on being able to set tab stops.
- Add pkgconfig(xproto) BuildRequires, new dependency.

- Update to version 1.1.2:
  + xclipboard: avoid overflow crash when building labels
    (lp#792642)
  + Change resource to better position Accept/Cancel (fdo#17364)
  + Build system fixes.

- Split xclipboard from xorg-x11. Initial version: 1.1.1.