[tlbuild] xetex on sparc-solaris dumps core using opentype fonts

[Akira Kakuto]

Karl Berry wrote:
> Replacing the ICU-4.6 LESwaps.h code with the ICU-4.4 version does
> result in a xetex binary that can read Zapfinfo without crashing.
> (Whether it can actually typeset anything correctly, I don't know.)

I cannot find any difference between 4.4 and 4.6 codes.
Bug in compiler? Does (value << 8) & 0xff00 + (value >> 8) & 0xff work?