* choose-temp.c: Split off make_temp_file, and the code
        duplicated between it and choose_temp_base, into...
        * make-temp-file.c: ... here; new file.

        * Makefile.in (CFILES): Add make-temp-file.c.
        (REQUIRED_OFILES): Add make-temp-file.o.

From-SVN: r40683