Log Message:
libXcomposite: update to 0.4.6.

Alan Coopersmith (9):
      Build xz tarballs instead of bzip2
      Fix spelling/wording issues
      gitlab CI: add a basic build test
      Mark two dpy parameters const as suggested by cppcheck
      Remove unnecessary casts from malloc() and free() calls
      Wrap XComposite*CheckExtension() in do { ... } while(0)
      Handle implicit conversion warnings from clang
      XCompositeCloseDisplay: Mark codes as unused
      libXcomposite 0.4.6