tinyexr: Sync with upstream 1.0.1

Removes miniz as a bundled dependency, relies on our own zlib instead.

Includes a couple commits ahead of `v1.0.1` tag to fix MinGW builds.

modules/tinyexr/SCsub

@@ -20,6 +20,9 @@ env_tinyexr.Prepend(CPPPATH=[thirdparty_dir])
 
 # Enable threaded loading with C++11.
 env_tinyexr.Append(CPPDEFINES=["TINYEXR_USE_THREAD"])
+# miniz is an external dependency, we could add it but we can instead rely
+# on our existing bundled zlib.
+env_tinyexr.Append(CPPDEFINES=[("TINYEXR_USE_MINIZ", 0)])
 
 env_thirdparty = env_tinyexr.Clone()
 env_thirdparty.disable_warnings()

modules/tinyexr/image_loader_tinyexr.cpp

@@ -33,6 +33,8 @@
 #include "core/os/os.h"
 #include "core/string/print_string.h"
 
+#include <zlib.h> // Should come before including tinyexr.
+
 #include "thirdparty/tinyexr/tinyexr.h"
 
 Error ImageLoaderTinyEXR::load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale) {

modules/tinyexr/image_saver_tinyexr.cpp

@@ -31,6 +31,8 @@
 #include "image_saver_tinyexr.h"
 #include "core/math/math_funcs.h"
 
+#include <zlib.h> // Should come before including tinyexr.
+
 #include "thirdparty/tinyexr/tinyexr.h"
 
 static bool is_supported_format(Image::Format p_format) {