Modified and approved multicol-rule-shorthand-001.xht,
multicol-rule-style-ridge-001.xht, multicol-rule-style-groove-001.xht,
multicol-rule-style-inset-001.xht, multicol-rule-style-outset-001.xht

Added multicol-rule-style-ridge-001-ref.xht and
multicol-rule-style-groove-001-ref.xht

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rename : contributors/opera/submitted/multicol/multicol-rule-shorthand.xht => contributors/opera/submitted/multicol/multicol-rule-shorthand-001.xht