Update libpng to 1.2.50 so it can be built with Clang 3.2

This commit is contained in:
Ryan Houdek
2013-04-18 22:11:07 -05:00
parent 3a6492d3a9
commit 75efe7d315
21 changed files with 28314 additions and 26152 deletions

3462
Externals/libpng/png.c vendored

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