added test for bug 540
fix bug in radEHV for zero ideal
Merge pull request #519 from steenpass/realclassify_sw

fix: do not change sign of residual form in realclassify.lib
Merge pull request #513 from surface-smoothers/fix.radEHV_0_.bug

fix bug in radEHV for zero ideal
Merge pull request #491 from surface-smoothers/test.for.bug540

added test for bug 540
fix: use local degree ordering for highcorner()
(cherry picked from commit aeadebaaa1e1dd0a5398e4f834e5b5f8c29012de)

Signed-off-by: Andreas Steenpass <steenpass@mathematik.uni-kl.de>