closed #3964, Solve the bug of logic code in method Image::saveImageToPNG().
Merge branch 'develop' into issue3964
new[] free mismatching after PR #5326.
closed #3964, Use GL methods instead in function RenderTexture::newImage()
[Android] Don't free BitmapDC::_data in BitmapDC's destructor. Remove unused BitmapDC::env.
Updates mac / iOS project.
Uses `malloc` instead of `new[]`, keep malloc/free matching.
Merge pull request #5376 from dumganhar/free-new-mistake

new[] free mismatching after PR #5326.
Merge pull request #5365 from natural-law/issue3964

closed #3964: Solve the bug of Image::saveImageToPNG().
Merge remote-tracking branch 'upstream/develop' into develop
add ios prefix.pach