regression is now at the top level

testcases/regression/InfiniteLoop.scala

testcases/regression/README

testcases/regression/error/Array1.scala

testcases/regression/error/Array10.scala

testcases/regression/error/Array2.scala

testcases/regression/error/Array3.scala

testcases/regression/error/Array4.scala

testcases/regression/error/Array5.scala

testcases/regression/error/Array6.scala

testcases/regression/error/Array7.scala

testcases/regression/error/Array8.scala

testcases/regression/error/Array9.scala

testcases/regression/error/InstanceOf1.scala

testcases/regression/invalid/Array1.scala

testcases/regression/invalid/Array2.scala

testcases/regression/invalid/Array3.scala

testcases/regression/invalid/Array4.scala

testcases/regression/invalid/Array5.scala

testcases/regression/invalid/Epsilon1.scala

testcases/regression/invalid/Epsilon2.scala