Merge "Infinite loop when migrating calendar widget" into ub-launcher3-rvc-dev

         * to speed up the search.

         */

        private boolean findPlacement(DbEntry entry) {

            for (int y = mNextStartY; y > 0; y--) {

            for (int y = mNextStartY; y >= (mScreenId == 0 ? 1 /* smartspace */ : 0); y--) {

                for (int x = mNextStartX; x < mTrgX; x++) {

                    boolean fits = mOccupied.isRegionVacant(x, y, entry.spanX, entry.spanY);

                    boolean minFits = mOccupied.isRegionVacant(x, y, entry.minSpanX,