Updating crufty tests, remove invalid TryCatch8NegativeTest

TryCatch8NegativeTest looks like it is out of sync with the spec, other TryCatch?NegativeTest cases have outdated or illegal syntax other than the true object of the test.

Committed: https://code.google.com/p/dart/source/detail?r=3115

[zundel, 2012-01-09 21:39:37]

I noticed these tests were failing dartc for the wrong reason (can't specify a
default value for a positional parameter), so I went through and updated them.

http://codereview.chromium.org/9162001/diff/1/tests/language/src/TryCatch8Neg...
File tests/language/src/TryCatch8NegativeTest.dart (left):

http://codereview.chromium.org/9162001/diff/1/tests/language/src/TryCatch8Neg...
tests/language/src/TryCatch8NegativeTest.dart:19: throw;  // An exception object
is needed here.
This should be legal according to spec section 11.14 since its inside a catch
clause.

http://codereview.chromium.org/9162001/diff/1/tests/language/src/TryCatch8Neg...
tests/language/src/TryCatch8NegativeTest.dart:22: a();
nothing actually throws in the try block, so this tries to invoke null as a
method.

[gbracha, 2012-01-09 21:56:44]

lgtm modulo 1 comment

http://codereview.chromium.org/9162001/diff/1/tests/language/src/TryCatch3Neg...
File tests/language/src/TryCatch3NegativeTest.dart (right):

http://codereview.chromium.org/9162001/diff/1/tests/language/src/TryCatch3Neg...
tests/language/src/TryCatch3NegativeTest.dart:7: 
it might be good to be more specific: duplicate declaration of variable "e" in
catch clause in method Helper.f1().