[png-mng-implement] (no subject)

[Glenn Randers-P. <gl...@co...>]

I tested some more old 64-bit versions of gcc that are available for Ubuntu.

gcc-3.3.6 segfaults when attempting pngtest.  Adding the __PIC__ definition
  does not change anything.

gcc-3.4.6 produces corrupt pngout.png

gcc-4.0.3 succeeds

gcc-4.1.2 succeeds

All tests were run on the Intel Core 2 Duo.

Glenn