[tex-live] ifxetex package missing from collection-xetex

[Philip Taylor (Webmaster)]

  > In my opinion TeXLive's selling point is that it behaves similar on
  > all platforms.

I'm not convinced that's true.  I use (and recommend) TeX Live
because it provides me (and others) with a nice standard TeX
setup for Windows.  I don't really care whether it supports
any operating system ending in "X", because I don't use such
systems, nor do I support anyone who does, so whether it
behaves identically on such systems is actually of little or
no interest.

** Phil.