[Gsll-devel] use ASDF's temporary-directory in favor of Osicat's

[Mirko Vukovic]

Hello,

GSLL uses the Osicat library for the only purpose of obtaining a valid
temporary directory.

The new ASDF 3 (actually UIOP) offers the same functionality.

Since GSLL depends on ASDF which uses UIOP, I propose that it switches
to UIOP's version.

This minor point would simplify installation of GSLL on Windows.

Mirko