The uppercase folder (Akeeba) is obsolete. You can safely remove it.
Since you asked, no, it's not correct that both folders are included. The root cause of the problem is, however, a bit esoteric. I will explain this in case someone runs into a similar issue in their software.
That folder was included in the packaging by error. When a folder is renamed in a way that only the letter case changes (from Foo to foo), Git does commit the new folder name but when pulling the changes the obsolete folder is not deleted. One would have to do an intermediate rename and commit, e.g. Foo to foo--temp, commit, foo-temp to foo, commit again, to fix that issue. Our designer was not aware of this peculiar Git behavior. As a result the folder rename was done incorrectly and the build machine was left with an obsolete folder which ended up in the package.
I have fixed this issue and I am also adding code which will allow future versions of our software to automatically remove the obsolete folder in a way which is safe for both case sensitive filesystems (e.g. Linux, macOS with HFS+ set up with case sensitivity) and case insensitive filesystems (e.g. NTFS and FAT32 on Windows, macOS with HFS+ using the default, case insensitive setup).
Nicholas K. Dionysopoulos
Lead Developer and Director
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