sci-misc/sfst: Fix Manifest for sci-misc/sfst1.4.6g.

The file at $SRC_URI, must have been changed since the Manifest entry
first was created.

Signed-off-by: James Cloos <cloos@jhcloos.com>
Merge pull request #105 from jhcloos/sfst

sci-misc/sfst: Fix Manifest for sci-misc/sfst1.4.6g.