Remove special-casing of calls to RegExp test and exec methods with no argument.

test/mozilla/mozilla.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
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 #
 #     * Redistributions of source code must retain the above copyright
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 #     * Redistributions in binary form must reproduce the above
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@@ skipping 282 matching lines @@
 js1_5/Regress/regress-280769-4: PASS || FAIL
 js1_5/Regress/regress-280769-5: PASS || FAIL
 
 
 # We do not support static RegExp.multiline - should we?.
 js1_2/regexp/RegExp_multiline: FAIL_OK
 js1_2/regexp/RegExp_multiline_as_array: FAIL_OK
 js1_2/regexp/beginLine: FAIL_OK
 js1_2/regexp/endLine: FAIL_OK
 
+# We no longer let calls to test and exec with no argument implicitly
+# use the previous input.
+js1_2/regexp/RegExp_input: FAIL_OK
+js1_2/regexp/RegExp_input_as_array: FAIL_OK
+
 
 # To be compatible with safari typeof a regexp yields 'function';
 # in firefox it yields 'object'.
 js1_2/function/regexparg-1: FAIL_OK
 
 
 # Date trouble?
 js1_5/Date/regress-301738-02: FAIL_OK
 
 
@@ skipping 538 matching lines @@
 ecma/Date/15.9.5.12-2: SKIP
 ecma/Date/15.9.5.8: SKIP
 ecma/Date/15.9.5.9: SKIP
 ecma/Date/15.9.5.11-2: SKIP
 ecma/Expressions/11.7.2: SKIP
 ecma/Expressions/11.10-2: SKIP
 ecma/Expressions/11.7.3: SKIP
 ecma/Expressions/11.10-3: SKIP
 ecma/Expressions/11.7.1: SKIP
 ecma_3/RegExp/regress-209067: SKIP