Latest release cannot be extracted correctly

[rogela]

When the release 20200316 is extracted, include/CL shows up as a single file instead of the expected directory.

[bader]

Most likely this issue was introduced by #1308.
@vladimirlaz, please, take a look.

[vladimirlaz]

I am working on that.

[vladimirlaz]

@rogela, please try 20200318 release. Fixed compiler package has been uploaded.