[OpenJDK 2D-Dev] <AWT Dev> RFR: Allow using a system installed libpng

[Omair Majid]

* Sergey Bylokhov <Sergey.Bylokhov at oracle.com> [2014-02-18 12:35]:
> cc 2d alias also.
> 
> The fix looks good. I am curious who will document all new options
> in README-builds.html?

One thing I have always loved about autotools is self documentation.
With this patch, for example, ./configure --help gives me the new option
and the description but also gives me the new _CFLAGS and _LIBS options
added.

I don't mind updating README-builds.html, but I think that might be
over-documenting (if there's such a thing) :)

Thanks,
Omair

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