png: Split library to thirdparty dir and allow unbundling

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Uses the new structure agreed upon in #6157, but the thirdparty/ folder
does not behave following a logic similar to that of modules/ yet.

The png driver can't be moved to a module as discussed in #6157, as it's
required by core together with a few other ImageLoader implementations
(see drivers/register_driver_types.cpp:register_core_driver_types())

Dropped the possibility to disable PNG support, it's a core component
of Godot.

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This commit is contained in:

Rémi Verschelde

2016-10-09 23:36:17 +02:00

parent 17f06202b7

commit 5fef84a135

35 changed files with 203 additions and 61 deletions

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thirdparty/libpng/png.c vendored Normal file

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