[tlbuild] Bug in libpng affecting Solaris 10

[Mojca Miklavec]

On 13 January 2018 at 17:36, Apostolos Syropoulos wrote:
>
> Now there is a problem with
>
> /container/source/texlive/source/Work/libs/icu/../../../libs/icu/icu-src/source/common/unicode/umachine.h:343:13:
> error: unknown type name ‘char16_t’
>      typedef char16_t UChar;
>              ^

That's exactly the same problem as reported by Dick on OS X 10.11, so
it's not specific to Solaris.

Mojca