gap-design-1.8-bp160.1.9

- Update to release 1.8
  * Added the undocumented function ``OARunMultiplicityBound``
  * Improved the performance of ``BlockIntersectionPolynomialCheck``

- Update to new upstream release 1.7
  * Documented utility function DESIGN_IntervalForLeastRealZero
  * Lists of changes moved from README to new file CHANGES.md,
    README now README.md, gpl.txt now LICENSE.
  * Added test directory tst, file tst/testall.g, and a test file
    tst/testall.tst.
  * Documentation updated to reflect move to github and version
    change.

- Split design (version 1.6) off the gap RPM package