Log Message:
Update to 1.5.1beta01:

1.5.1beta01 contains a security fix for 1.5.0.

The current public release, libpng 1.5.0, continues the evolution
of the libpng API, finally hiding the contents of the venerable
and hoary png_struct and png_info data structures inside private
(i.e., non-installed) header files. (Apps that compiled with libpng
1.4 without warnings about deprecated features should happily
compile with 1.5, too.) It also includes a new, more thorough test
program (pngvalid.c), a new pnglibconf.h header file that tracks
what features were enabled or disabled when libpng was built, and
huge thanks to John Bowler, who did most of the work. Complete
differences relative to libpng 1.4.x are detailed at
http://www.libpng.org/pub/png/src/libpng-1.4.x-to-1.5.x-summary.txt .

Since the shlib name changed, next up: PKGREVISION++ all across pkgsrc.